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Legacy Add-On (Don't sort alphabetically, use Ctrl+F)Daily usersLast UpdatedDeveloper StatusNotesWE suggestionsFeature ParityWE notes
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Adblock PlusadblockportedWebextension available on development channelMostlyuBlock Origin performs significantly better, because it's more resource-efficient. (Doesn't have access to privileged pages)
4
uBlock Origin4’032’1612017-10-21ported
5
VideoDownloadHelper3’764’1242017-10-19port in worksVideo Downloader professionalShitty Privacy Policy
6
Video Downloader Prime
7
Easy Screenshot2’504’4012017-08-21Firefox Screenshots (FF56)
8
Awesome Screenshot Plus
9
One-Click Screenshot
10
Dev Toolbar (Shift+F2) "screenshot --fullpage"
11
Win+Shift+S in Windows 10
12
NoScript Security Suite1’735’8502017-10-23port in worksuMatrixLimited
13
Firebug521’5552017-03-01won't be portedMany features are built-in since Firefox 50Built-in developer toolsMostlyFirebug Gaps
14
https://developer.mozilla.org/en-US/docs/Tools/Migrating_from_Firebug
15
iMacros456’8892016-08-09Probably will be ported, since it is available on Chrome.
16
DownThemAll!944’4652016-09-29port in worksNecessary APIs are unavailable for some functionalities.Bulk Media DownloaderLimited
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Limited
18
jDownloaderNot a Firefox add-on
19
Download YouTube Videos as MP4xxport unlikelyThis add-on has been removed by its author.YouTube Download & Adblocker SmarttubeFullRequires nothing, also supports audio-only and various file formats
20
YouTube Video and Audio DownloaderFullrequires manual installation of ffmpeg and native client
21
Greasemonkey872’4952017-10-03port in worksSome features may be missing from portViolentmonkeyMostlydt
22
TampermonkeyMostlyProprietary, poor privacy, has a "End-User License Agreement" at installation
23
Random Agent Spoofer132’2282016-09-21won't be portedAuthor won't port, though someone had started working on a fork that is a webextention. Others are free to join uMatrix
24
Lastpass659’7262017-10-26port in worksbitwarden - Free Password ManagerPartialThe alternatives would require creating a new account.
25
Google Translator for Firefox636’9372017-02-01For full pages (uses SAAS)Page Translator
26
For pieces of text (uses SAAS)Dictionary (Google™ Translate) Anywhere
27
Tab Mix Plus586’5982017-08-28port in worksIch bin nicht einverstanden mit "Hafen in Arbeiten". Ich glaube nicht, dass es etwas gibt und sie warten auf WE ändert sich. http://tabmixplus.org/forum/viewtopic.php?f=2FoxyTabLimited
28
Tab Auto RefreshLimited
29
Open Tabs Next to CurrentLimited
30
Always RightLimited
31
Select After Closing CurrentLimited
32
Download Flash and Video525’2122017-10-19Video Downloader professionalPartial
33
FlashGot Mass Downloader483’9102016-12-01port in worksBulk Media Downloader
34
Download Master
35
Multiple File Downloader
36
YouTube High Definition348’7262017-10-15portedYouTube in HD (720p, 1080p, 1440p, 2160p)
37
HTTPS Everywhere389’6342017-10-25port in worksWebExt available in the developers channel for those eager to testSmart HTTPSMostlyDifferent behaviour - HTTPS Everywhere uses a crowd-sourced ruleset to redirect, Smart HTTPS tries HTTPS on all sites the user visits
38
Element Hiding Helper for Adblock Plus345’8972017-04-12won't be ported"There are plans to integrate some comparable functionality into Adblock Plus"uBlock OriginMostly
39
Flagfox336’3322017-09-27port in worksTweet from 7 Aug 2017: "I'll plan to get around to fighting with it, eventually."Country Flag +
40
Also an older thread on the extension forumCountry Flags & IP Whois
41
Active Whois & Flags extension
42
Self-Destructing Cookies199’7682017-03-25won't be portedWE alternatives can't access localstorage (Bug 1388428).Cookie AutodeletePartialCan't access localstorage
43
lowcarbLimitedOn demand/startup only; Cookies only
44
Cookie SweepLimitedCan't access localstorage. Not automatic; only removes on demand
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Classic Theme Restorer324’7262017-10-17won't be portedRequired APIs are not available. Some features are available in userChrome.css file, and some may be added to Firefox 57.userChrome.cssLimited
46
Application MenuLimitedOnly implements the old style application menu, many features are still missing.
47
Stylish406’1242016-08-09no info so farWebExtensions can't style browser chrome, for that use userChrome.css.xStyleLimitedForked from Chrome's Stylish. Can't restyle UI, can't access about: pages.
48
StylusMostlyForked from Chrome's Stylish. Can't restyle UI, can't access about: pages.
49
Website Theme Manager (WebExtension)Limited
50
BetterPrivacyxdiswon't be portedThis add-on has been removed by its author.Flash is click to play by default now, so there is no risk of third-party tracking. Additionally Flash cookies are deleted with regular cookies by Firefox.
51
FireFTP320’5292017-01-20port unlikelyFilesystem integration is not available, but there are a good number of online FTP apps
52
FireGestures282’2632017-06-11WE extensions can't modify internal pages and AMO, so gestures won't work there.Foxy GesturesMostlyhttps://bugzilla.mozilla.org/show_bug.cgi?id=1360278 <- needs bug fix to develop equivalent in Linux and MacOS
53
GesturefyMostlyhttps://bugzilla.mozilla.org/show_bug.cgi?id=1360278 <- needs bug fix to develop equivalent in Linux and MacOS
54
smartUp GesturesMostlyhttps://bugzilla.mozilla.org/show_bug.cgi?id=1360278 <- needs bug fix to develop equivalent in Linux and MacOS
55
EPUBReader269’6372017-08-01ported
56
Session Manager242’7442017-01-30won't be portedhttps://www.mozdev.org/bugs/show_bug.cgi?id=26384
57
Reddit Enhancement Suite224’0712017-09-21ported
58
Disconnect212’8392017-04-03ported
59
QuickJava191’0262016-10-08won't be portedJavaScript Toggle On and Off (WebExtension)LimitedOnly supports toggling JS.
60
Flash Blocker StrictLimitedOnly supports toggling Flash.
61
Image Video BlockLimited
62
Javascript ControlLimitedOnly supports toggling JS.
63
FoxyProxy184’4392017-01-28port in worksProxy SwitchyOmegaLimitedNo auto-switching based on URLs
64
Best Proxy Switcher
65
Password Exporter177’4462017-07-04Necessary APIs are unavailable, so it will be delayed.
66
Add-ons Manager Context Menu114’3572013-10-24won't be portedabout:addons is off limits to extensions.
67
SQLite Manager143’8252015-02-28won't be portedWebapp alternatives exist.
68
All-in-One Sidebar126’8832017-08-17won't be portedToggle sidebar in FF56. Sidebar menu in FF55. Switch position left/right in FF55. Sidebar API. Width limited and contents not persistent by design. FF57 open/close programmatically with user input. Toolbar API should allow a more complete port, but API won't be ready for FF57.URL in a BoxLimitedBasic sidebar web panel functionality.
69
Webpage SidebarLimited
70
Selenium IDE121’7722015-09-25won't be ported
71
Bulk Media Downloader93’1342017-09-04ported
72
Status-4-Evar109’6562017-08-21waiting on WE APIsNeeds toolbar API
73
New Tab Override130’3722017-10-23portedNew Tab TweakerMostlyThe WE provides a bit more functionality than the original legacy ext. Unable to redirect to about:home
74
Custom New TabsMostlyLocal files (paths beginning "file://" ) are not yet supported.
75
Change New Tab
76
newtab.urlEX
77
Print Edit73’6042017-08-15portedAvailable at new link ->Print Edit WE
78
Tab CenterportedSidebar API; use userChrome.css to hide tab bar.Tab Center ReduxMostlyPorted from the Tab Center Test Pilot experiment!
79
1Passwordportedchange logFull
80
ScrapBook94’5522016-08-27won't be portedLooking at what the add-on does, it should be portable to WE: content script or downloads API to save pages, chrome.storage with larger storage quota, sidebar API... One thing that won't be possible will be filesystem integration, but the add-on can make its own fs using IndexedDB or chrome.storage, and urls can be opened via the blob: scheme
NotesLimitedVery basic sidebar note taker.
81
82
Notes experimentLimitedHas sync and dark mode.
83
Sidebar NotepadLimitedHas encryption.
84
Web ScrapBookLimitedqr
85
Save Page WELimited
86
ScrapBook X11’0912017-10-25port unlikelyWeb ScrapBookLimited
87
Image Zoom94’6492013-05-27port unlikelyRotate and Zoom ImageLimitedCan't zoom image with mousewheel
88
Image ZoomerLimitedUse mouse button for resize img, no rotate
89
Zoom Image To FitDisplay in a tab or a window
90
Tab Groups89’4192017-01-27won't be portedNecessary APIs are unavailable.Containers Experimenttaphttps://discourse.mozilla.org/t/-/13310/17?u=grahamperrin https://github.com/mozilla/testpilot-containers/issues/336#issuecomment-305962454
91
Sea ContainersLimited
92
TaboramaLimited
93
Text Link86’3732016-03-16port unlikelyauthor doesn't respond to requestslinkyFullnot supported on Linux? (it actually works)
94
Using Violentmonkey, install the script https://userscripts-mirror.org/scripts/show/7122 or use bookmarklet from it on demand https://gist.github.com/anonymous/21397ec37d110a64d495877e9f45fb13
95
Text Link WE
96
Text Link webext
97
Cookies Manager+117’8922017-07-22won't be ported
98
Tree Style Tab89’5382017-10-17port in worksNightly WE version available nowTree TabsMostly
99
Sea Containers
100
Tab Center Redux
101
YouTube MP3 Podcaster78’9912016-07-05
102
Multifoxwon't be portedThis add-on has been removed by its author.Containers ExperimentFullContainers are also available (built-in) on Nightly
103
Containers On The Go
104
ChatZilla74’2362016-11-09port in worksNecessary APIs are unavailable (Bug 1247628)
105
DOM Inspector73’3672015-07-09won't be portedBuilt-in alternative (Browser Toolbox) availableMostlyBrowser Toolbox actually has more features, but some people find it clumsy to use
106
The Addon Bar (Restored)19’3022016-05-03port unlikelyNecessary APIs are unavailable.
107
Gmail™ Notifier (restartless)70’8112017-10-23no response on being asked for WEGmail™ Notifier +
108
Checker Plus for Gmail
109
Panel & Notifier for Gmail™
110
Tamper Data65’5702010-02-11port unlikelyHeader EditorNone of these replacemets adds more functionality than the built-in "Resend" in the devtools. Not really replacements.
111
HTTP Header Live
112
Download Manager (S3)69’4332017-09-03won't be portedWaiting for WE API
113
Decentraleyes75’4772017-10-12portedWebExtension available on the Development ChannelLocal CDNPartial
114
Media Converter and Muxer63’5842017-05-28portedNew download link ->Media Converter and Muxer (WebExtension)Full
115
Tab Scope67’3062016-08-17won't be portedNecessary APIs are unavailable
116
RefControl52’1222014-12-07port unlikelyReferer ControlPartiallacks "same domain" setting and combining "fromSite › toSite"; includes 3rd party JS and Disqus in iFrame on config page
117
OmniSidebar50’9452017-01-28won't be portedSee All-in-One Sidebar. Limited to one docked sidebar. Some of its functionality was built-in Firefox.
118
Tile Tabs47’6612017-08-16ported Tile Tabs WEPartialLimited functionality. WE can only move windows, so every tab becomes a new window.
119
Webmail Ad Blocker62’6362017-10-21portedFull
120
HttpFox54’1962014-05-14won't be porteddevelopment stopped in 2014 (officially)F12 - Network, or Browser Console
121
Google search link fix65’3252017-08-07portedFull
122
I don't care about cookies62’9952017-10-12PortedDoes this mean a WE is "in works"?Add the filterlist to uBlock / ABPFullDeveloper: "it will cover 99% of cookie warnings"
123
DownThemAll! AntiContainer53’8952016-04-14won't be ported
124
Private Tab48’2982017-05-28wird nicht portiertTracking possible progress.Containers On The GoLimitedErstellt temporäre Tabulatoren.
125
Containers ExperimentLimitedContainer Tabs sind nicht die gleichen wie private Tabs, aber sie erlauben Cookies getrennt und gelöscht werden separat.
126
gtranslate52’5282016-11-29port in works
127
Add to Search Bar49’4512016-01-20port unlikelyNeeds API (Bug 1268401)
128
KeeFox52’5112017-10-24port in worksKeepass Helper
129
keepassxc-browser
130
Keywi
131
TitleBarLimitedVery bare bones replacement that can still fullfill the needs of some users if used with KeePass auto-fill feature
132
LeechBlock49’7102017-03-19port in worksFocusBlocker (New)Partial
133
X-notifier (for Gmail,Hotmail,Yahoo,AOL ...)46’5182017-09-09portedNot possible to use scriptsMostly
134
Roomy Bookmarks Toolbar44’6132017-10-27won't be porteduserChrome.css
135
User Agent Overrider51’4172017-06-21won't be portedyesUser Agent SwitcherMostly
136
Image Block38’4812016-04-03port unlikelyImage Video BlockFull
137
ImgLikeOpera38’0042013-03-03port unlikelyImage Video BlockLimited
138
Extended Statusbar33’7442016-06-15Necessary APIs are unavailable.PRs welcome
139
InlineDisposition45’2092011-04-20portedInlineDisposition (WebExtensions)FullPort by different author
140
Display InlineFullRespects file extension
141
uMatrix41’1162017-10-05port in worksDevelopment channel version is WebExt
142
Open Bookmarks in New Tab 35’8552016-02-10won't be portedNative support in Firefox 57 (Bug 658245)Set browser.tabs.loadBookmarksInTabs = trueFull
143
Dark Background and Light Text37’7812017-10-23port in worksWE portPartialsome limitations
144
Dark Mode (WebExtension)Currently makes many websites unusable by causing script errors
145
New Tab Tools29’2302017-10-07port in worksWE available in development channel
146
Copy Plain Text 230’6972016-08-21Copy PlainText
147
Clippings36’1672017-10-18port in worksdue to WE limitations, the ported version will not have the full feature set.
148
FindBar Tweak28’7652017-01-28won't be portedFind API (FF57)Set findbar.modalHighlight and findbar.highlightAll to true in about:config
149
Undo Closed Tabs Button31’1692016-08-24port unlikelylast code update in 2/2016Undo Close TabFull
150
Undo Close Tab ButtonFull
151
Context Search29’4362016-03-12Needs API to use built-in search engines (Bug 1352598)Context SearchAll current WebExtensions alternatives ships their own list of engines (or are based on extra bookmarks); they can't be integrated to the already installed browser search engines.
152
Context Search WebExtension
153
Bookmarked Searchsyncable, but no support for POST requests
154
Selection Context Search
155
Font Finder26’0822016-12-01portedFont Finder (revived)Full
156
Simple Locale Switcher31’6392017-08-08Necessary APIs are unavailableUse about:config to change locale
157
Restart26’5692017-03-09won't be portedNative support (Bug 1366009)Press Shift + F2 to open developer toolbar; type 'restart' and hit Return
158
Gmail™ Notifier +24’2572017-06-18portedPartialno "persistent" for popups (Bug 1383979) support.
159
ShowIP23’4322015-01-14port unlikelyWhatIPPartial
160
QuickDrag22’2152011-10-27port unlikelyFire DragFull
161
Glitter DragFull
162
Tab Memory Usage20’8842016-09-10won't be portedNecessary APIs are unavailable.about:memory has memory per content process, and inside that per tab
163
Cookie Controller54’4802017-08-05won't be ported
164
Beyond Australis18’4562017-01-28won't be portedNecessary APIs are unavailable. It is possible to use userChrome.css to emulate the appearance though.userChrome.css - example?
165
VimFx19’6542017-03-25won't be portedVimium-FFPartialNot all keybindings are available and they are not customizable
166
Saka Key?
167
Open With19’7142017-09-26port in worksThe official WE port is going to require Python for Windows.External Application ButtonMostlyRequires additional program running in background.
168
Open in Google Chrome BrowserLimitedRequires additional program running in background.
169
Open in VivaldiLimitedRequires additional program running in background.
170
Open in Microsoft Edge™ BrowserLimitedRequires additional program running in background.
171
Open in Internet ExplorerLimitedRequires additional program running in background.
172
Open in SafariLimitedRequires additional program running in background.
173
Open in Tor BrowserLimitedRequires additional program running in background.
174
FoxyLinkLimitedRequires additional program running in background.
175
Privacy Settings19’0992017-05-24WebExtensions can't directly modify about:config settings, unless there is an API. A replica of Privacy Settings could exist but it would output a user.js file with your custom settings for you to copy to the right location manually.User can set variables in about:config manually. Could also try ffprofile.com and Ghacks' config settingsPartial
176
Imagus21’6952017-10-15port in worksThe dev says that the port is essentially ready but he won't publish it to AMO yetSuperZoomLimitedDoesn't always work as expected, needs some more work
177
Hover Zoom+ (I)LimitedDoesn't always work, still marked as experimental, last update 08/2016. Fork of Chrome version, not maintained now.
178
Hover Zoom+ (II)?Tried to submit to AMO, but failed code review. [Updated: 2017-08-10, Users: 293,172]
179
Mouseover Popup Image ViewerPartialUserScript
180
ImagePreviewerLimitedRequires additional add-on to work; last updated 03/2016
181
CanvasBlocker19’0002017-10-10port in worksNative support (Bug 967895)Canvas Defender
182
BarTab Lite16’2142013-03-11won't be portedTab Suspender (Tab Unloader)
183
Multi Links Plus16’7752016-11-27FoxyLinkPartial
184
Snap Links Plus Mostly
185
Vimperator15’2822017-02-17Some keybindings are unavailable.see VimFx
186
Grab and Drag16’4362016-12-15won't be portedScrollAnywhere
187
Middle Mouse Button Scroll
188
DragOnWeb
189
BMW - Broken Mouse Wheel
190
Drag To Scroll
191
Nuke Anything Enhanced16’3212017-10-09port unlikelyMost ad blockers can selectively remove items from a page (permanently), uBlock Origin also has a new "zapper mode" for temporary removal (see WE progress above)Limited
192
Main Content ExtractionLimitedReplicates the "Remove everything else" part for site's main content
193
Use DeveloperTools built-in to FF: Right click, "Inspect element", Delete.PartialOnly covers "Remove Selection" (and only 1 element at a time), not "Remove everything else"
194
Update Scanner17’3972017-02-21port in works
195
Max Tabs15’1322015-07-06portedMax Tabs (Web Extension)Port by different author
196
Image Search Options14’7432017-04-05port in worksReverse Image SearchMostly
Only limited to one custom extension, not as configurable
197
Fast Image Research
198
RevEye Reverse Image Search
199
TiddlyFox14’6992017-04-11No filesystem apis.
200
Duplicate in Tab Context Menu13’5562017-08-10Available in FF57 (Bug 455722)Duplicate Tab ShortcutFull
201
Duplicate tab
202
New Tab Beside
203
FoxyTab
204
Bookmark Deduplicator12’7422015-03-16Removing a bookmark automatically removes all duplicates.Bookmarks OrganizerFull
205
Multiple Tab Handler12’4242017-10-13Issue open since 6/2017, no reply from devTree Tabs
206
MultiSelect TabsPartialUses a sidebar to manage, doesn't offer all management options of MTH yet
207
At Your Command
208
Brief12’4012017-05-06port in worksWE portPartialSome limitations: no SQLite access, no livemarks for feed list, or installing a handler for feeds
209
Feedbro
210
Bloody Vikings!13’5432017-09-04ported
211
Open With Photoshop11’7522017-10-17External Application ButtonRequires installation of a native app
212
Sage11’4122017-06-16No developer response to e10s/WE Github issueWE sidebars API should make a port easier.
213
Save File to10’2602016-02-22port unlikelyIssue open w/o response; last commit 2/2016Save In...Limited to downloads folder. (Can do symbolic links [I believe] in the download folder)
214
Suspend Tab11’5922016-06-16Issue openTab Suspender (Tab Unloader)PartialReplaces tabs with a lightweight page. This breaks session restore and bookmarking for suspended pages. Page state is not saved (forms, scroll location, etc...)
215
Auto Unload Tab7’8692016-12-20Needs chrome parityTab Suspender (Tab Unloader)PartialReplaces tabs with a lightweight page. This breaks session restore and bookmarking for suspended pages. Page state is not saved (forms, scroll location, etc...)
216
Tab Unloader772016-12-21Tab Suspender (Tab Unloader)PartialNo menus on tab.
217
Auto-Sort Bookmarks9’3172017-02-25portedSort Bookmarks
218
AutoCopy9’0012013-01-04port unlikelyCopy On Select
219
Tab Rotator9’0062017-10-11TaboonPlusMostlyOnly changes forthground window if used in
mutliple windows, and not were it was activated
220
Tab Wheel Scroll8’7872017-01-05won't be portedNative support (Bug 1285812)WheeltabPartialWorks by holding right click and scrolling on a page, instead of scrolling the tab bar. Still experimental.
221
Prevent Tab Overflow7’1002016-08-27won't be porteduserChrome.css
222
Lazarus: Form Recovery7’4112011-08-10port in worksThere is a Chrome version, but that hasn't been updated for a while. If your biggest cause of error is accidental backspace press, you can set browser.backspace_action to 2 in about:config to disable it.Textarea Cache Lite
223
FormSave
224
Simple Form History
225
copyLinks7’3582010-01-28port unlikelyFoxyLink
226
Keybinder9’7602017-04-14won't be portedNecessary APIs are unavailable
227
Textarea Cache#ERREUR!portedTextarea Cache LiteMostly
228
Smart Referer7’9482017-10-06portednetwork.http.referer.XOriginPolicy = 1 (same domain)Referer Control
229
Slim Add-ons Manager6’0282016-08-03Chrome Web Store has several, so ports should be possible
230
Open in Browser6’9812017-03-28port in works
231
Perapera Chinese Popup Dictionary7’1092016-02-28port unlikelydev didn't even respond to e10s update requests (last response dated 9/2015)Zhongwen: Chinese-English Dictionary
232
Send to XBMC/Kodi6’3942017-10-07port evaluatedYoutube 2 KODI
233
Video Resumer6’2042017-09-20port unlikelyMedia URL Timestamper
234
Duplicate Tabs Closer6’6162017-10-27portedFoxyTabPartialTab menus manually only
235
Close duplicate tabsPartialPage action manually only
236
Tab Deduper
237
Tab Slideshow6’2462012-04-22port unlikelyPort unknownTaboonPlusMostlyOnly changes forthground window if used in
mutliple windows, and not were it was activated
238
No Resource URI Leak6’0022016-07-25won't be portedFixed in FF57 (Bug 863246)Full
239
Click to Play per-element5’7292016-12-07
240
Location Bar Enhancer5’8632016-01-26last commit 1/2016; e10s/WebExt issue openNavigate Up WE
241
breadcrumbusPartial
242
Websocket Monitor5’7482017-03-02port discussedwebext-websocket-monitorexperimental
243
Linky4’9562010-02-23port unlikelyFoxyLink
244
Open Selected Links
245
Old Default Image Style5’2212014-11-13
246
Certificate Patrol5’0562017-05-01Needs API (Bug 1322748)
247
Tab Preview4’9782007-12-03won't be portedNecessary APIs are unavailable
248
SSleuth5’0242016-12-17port in worksNeeds API (Bug 1322748)
249
Expire history by days4’7792017-06-20portedHistory Cleaner
250
History AutoDelete
251
Disable Ctrl-Q Shortcut4’6702012-08-21port unlikelyDoes not work on Linux until bug is fixed.Disable Ctrl-Q and Cmd-Q
252
Disable Ctrl+Q
253
Show Selected Images4’0942016-05-08
254
Html5 Youtube Video Speed Controller4’2482015-12-27port unlikelyDeveloper hasn't updated since 2015, unlikely to portVideo Speed ControllerFullWE port of a more-featured Chrome Extension
255
CoLT3’9582015-10-30won't be portedCopy Link Text (WebExtension)Partial
256
Link Text and Location Copier
257
Format LinkMostlyAlmost full replacement
258
Zutilo4’6182017-07-16
259
Open in Private Browsing Mode3’4112013-06-24port unlikelyOpen Page in Private Window
260
Incognito This Tab
261
Copy Link Text3’1292016-01-06willing to port but stuckCopy Link Text (WebExtension)Partial
262
Load Tab on select3’2532015-06-24port unlikelyDeveloper hasn't updated since 2015, unlikely to port.LoadTabOnSelectFull
263
Load on SelectPartialDoes not appear to support Linux.
264
HoldTab
265
Watch with MPV2’6942015-11-11issue open, but no response (yet)External Application ButtonPartialRequires installation of a native client app. Can't bind keyboard shortcuts. Awkward setup: requires specifying a 32x32 icon. Can only have one icon active at a time
266
Octotree3’9162017-09-15ported
267
Skip Redirect4’4632017-09-21portedOpen Link Directly (No Redirect)
268
Stay-Open Menu1’1752016-08-16port unlikelybrowser.bookmarks.openInTabClosesMenu = false (FF57)Bookmarks Manager and ViewerPartialWorks on bookmarks, not history.
269
Enable Copy, Cut and Paste2’9462015-11-07port unlikelyEnable Right Click and CopyA bit aggressive, causes a lot of breakage.
270
Happy Right-ClickFull
271
OverbiteFF2’4302017-03-14port unlikelyNecessary APIs are unavailable (Bug 1247628)
272
Select like a Boss2’4122015-04-28Select Link TextMostlyDoes not work on "addons.mozilla.org" and "about:" pages due to WebExtensions API restriction.
273
Drag-Select Link Text
274
Puzzle Bars2’0332017-01-28won't be portedContainers Experiment
275
Simplified Tab Groups2’5512016-10-31port in worksWE port
276
Containers Experiment
277
bitwarden - Free Password Manager10’8972017-10-12portedFull
278
Click-to-Play Manager1’6792016-07-23
279
Copy HTML1’4572013-11-01port unlikelyeven the project home (at Github) disappearedRight click on element > Inspect element > right click on selected row > Copy > Outer HTML
280
Delete Bookmark Icons1’6332016-01-21
281
TabSubmit1’4072011-05-23port unlikelySubmitToBlank"Because webextensions aren't able to modify the Firefox preferences it's unable to guarantee consistent behaviour when middle-clicking or ctrl/meta+left-clicking on a submit button."
282
Vertical Tabs Reloaded2’0752017-10-04port in worksAPIs needed for full support:
· Bug 1332447 (Hide tab strip)
· Bug 1322060 (Attach session data to tabs – FIXED FF57)
· Bug 1343817 (Open sidebars programmatically – FIXED FF57)
Vertigo TabsLimitedImplemented as sidebar:
Extension cannot automatically open the sidebar on startup or hide the original tab bar without installing an additional WebExtension Experiment
283
VerTabs Deluxe
284
Open in Private Window1’3802013-05-04port unlikelyhttps://github.com/LouCypher/openinprivatewindow/issues/6Open Page in Private WindowLimited
285
Incognito This TabLimited
286
Autoplay Toggle1’2862016-02-07HTML5 Video Autoplay BlockerLimiteduser script
287
Twitch Fox#ERREUR!port in works
288
au-revoir-utm1’8662017-04-17portedFull
289
Drag-Select Link Text1’5292017-10-24ported
290
VivaldiFox1’2402017-04-27port in worksSigned version of WIP package here.Mostly
291
DisableBackspaceNavigation1’0422011-01-13won't be portedSet browser.backspace_action to 2 in about:configFull
292
ThinTabs9062016-09-13won't be portedNecessary APIs are unavailable.FF57 compact densityPartial
293
userChrome.css
294
ThinBookmarks8352015-03-24won't be portedNecessary APIs are unavailable.FF57 compact densityPartial
295
userChrome.css
296
Permanent List-all-tabs Button7752012-01-22port unlikelyuserChrome.cssFull
297
Page Title in URL Bar6842017-10-04
298
Bookmark Tab6982016-01-03issue open, no response yet
299
InspectorWidget6742015-05-23won't be portedCan use the built-in element picker if you enable the Browser Toolbox
300
Link Ninja6052015-04-12port unlikelyFoxyLink
301
Don't close last tab4922016-05-09won't be portedSet browser.tabs.closeWindowWithLastTab to false in about:configFull
302
Copy Selected Links7182017-10-05FoxyLink
303
Sidebars List5182017-07-04Native supportNative sidebar menu in FF55.Full
304
LastModified Date5892011-03-22port unlikely
305
Sort and Search Customization Dialogs4492015-01-14won't be portedNecessary APIs are unavailable.
306
Download with youtube-dl5332017-02-22won't be portedExternal Application ButtonPartialRequires installation of a native client app. Can't bind keyboard shortcuts. Awkward setup: requires specifying a 32x32 icon. Can only have one icon active at a time
307
YouTube Download & Adblocker SmarttubeFull
308
YouTube Video and Audio DownloaderFull
309
Pentadactyl2922014-03-16port unlikelyinofficial builds are much younger (so "last update") is misleading heresee VimFx
310
Mile Wide Back2952011-10-11portedNew download link ->Mile Wide Back (WebExt)PartialDeveloper: won't work on about: pages
311
Blank Private Browsing Page2722015-11-06Portable to WebExtensions using the tabs APIuserContent.css
312
Request Control4182017-08-07portedFullded
313
Auto Shutdown2352010-03-16portedAvailable at new link ->Auto Shutdown (WebExtension)
314
tabSizeTooltip1862016-03-21won't be portedWould be possible to make a WE that appends size to tab's title.about:memoryHas memory per content process, and inside that per tab
315
ThinBars1762015-10-28won't be portedNecessary APIs are unavailable.Built-in compact theme (FF57)Partial
316
userChrome.css
317
Nicer Media Pages1092015-02-26portedMostlyMatch rules in webextension limited to only the "http", "https", "file", "ftp" and "app" URI schemes.
318
UTM Remover592017-10-11portedFull
319
URL Manager#ERREUR!won't be ported
320
Lean URL282017-03-25portedFull
321
OneTab40’7942016-06-09port in worksA Chrome version exists and work fine, so port should be possible.tabs2txtLimitedCopies your tabs' urls and gives you a window to copy them to clipboard.
322
Tab SaverLimited
323
TabberLimited
324
Drag & DropZones4’9672017-05-07portedAvailable at new link ->Drag & DropZones (Revived)
325
ScrollyFox11’9132011-12-09port unlikelyAutoScrolling
326
HTML5 Video Everywhere!49’8342017-10-18port in works
327
NetVideoHunter182’7182015-11-10
328
Owl3’3592017-08-28ported
329
URL to QrCode1’4242017-09-10portedTab2QRFull
330
Thumbnail Zoom Plus67’8732017-06-08port unlikelyHover Zoom+LimitedDoesn't always work, still marked as experimental, last update 08/2016. Fork of Chrome version, not maintained now.
331
Hover Zoom+ (Chrome)TBDTried to submit to AMO, but failed code review. [Updated: 2017-08-10, Users: 293,172]
332
DuckDuckGo372’6712017-10-12port in workscheck developer channel for beta buildsContext DuckDuckGoPartialContext search for selected text
333
DuckDuckGo !bangsPartial!bangs for selected text (context menu)
334
DuckDuckGo BangsPartial!bangs for selected text (context menu)
335
Unofficial DuckDuckGo PlusFullseems to cover all (not tested)
336
Profilist1’9302017-05-08help needed for porting
337
No Squint8’1062013-05-01won't be portedNative support (Bug 332275)Zoom Page WE
338
Always Ask8102017-05-10won't be portedNecessary APIs are unavailable.
339
Add-on Update Checker15’6792015-10-13won't be portedNecessary APIs are unavailable.
340
JS Print Setup 65’9212016-09-30port in worksNecessary APIs are unavailable.
341
Pick & Save Images13’4782017-09-06won't be portedBulk Media downloader, download star
342
Menu Wizard163’3562017-09-03won't be portedNecessary APIs are unavailable.

Hiding context menu entries can be accomplished by finding each entry's id with Menu Wizard (click on the small properties icon beside each entry) and adding "display: none !important" rules to userChrome.css.
userChrome.css
343
RequestPolicy13’6062013-07-30port in worksuMatrixFullWebExtension is beta & unsigned
344
RequestBlockLimitedSupports only temporary blocking/unblocking
345
Grammalecte14’4322017-10-20port in worksWaiting on APIs
346
Check4Change16’3382017-02-01Wachete - Monitor web changes
347
Distill Web Monitor13’5662017-10-10portedis under review and will be available shortly.Wachete - Monitor web changes
348
Locate in Bookmark Folders372007-03-05port unlikelyNative support (Bug 469441)Bookmarks Manager and ViewerPrivacy handicap: Syncs favicons via Google API. Reported to be slow if you have many bookmarks.
349
Show Parent Folderxxwon't be portedNative support (Bug 469421)Bookmarks Manager and Viewer
350
Sidebar Bookmarks Search Plusxxwon't be portedBookmarks Manager and Viewer
351
Go Parent Folderxxwon't be portedNative support (Bug 469441)Bookmarks Manager and Viewer
352
Progre1’3672013-01-06port unlikelyLoad Progress Bar
353
Website Theme Manager932016-10-01portedAvailable at new link ->Website Theme Manager (WebExtension)
354
Close All Tabs (Reloaded)3’7282013-09-26Close All Tabs ButtonMostly
355
Close Other Tabs Button
356
Clear Tabs
357
Zoom Page63’0952017-08-15portedAvailable at new link ->Zoom Page WE
358
Navigate Up8092017-08-14portedAvailable at new link ->Navigate Up WE
359
Search Site2’0662017-08-15portedAvailable at new link ->Search Site WE
360
Download Status Bar174’7112016-09-26port unlikely
361
NewScrollbars14’8712016-12-20won't be portedNeed support (bug 77790)
362
AbcTajpu2’5712014-11-25portedAvailable at new link as AbcTajpu2, but has fewer features AbcTajpu2Mostly
363
Doesn't have access to full unicdoe like AbcTajpuUnicode KeyboardMostly
364
Add-on Compatibility Reporter64’4272017-06-21won't be ported
365
Clean Uninstall6’5462017-08-18won't be portedBy default webextensions clear storage when uninstalled (extensions.webextensions.keepStorageOnUninstall).Full
366
Advanced Locationbar2’5672016-11-23won't be ported"It is not possible to implement this extension using WebExtensions API."breadcrumbus
367
Fast Dial83’2432016-12-11won't be portedGroup Speed Dial
368
Bookmarked Speed Dial
369
Feed Sidebar3’2892014-04-07won't be portedDisplays new items from Live Bookmarks in a sidebar. Developer can be contacted about taking over development.
370
Open Image in New Tab5’0672009-02-14port unlikelyOpen image in a new tabMostlyRequires permissions
371
View Image in New TabMostlyDoes not require any permissions
372
Zoom Image To FitFull
373
JSONView84’0902017-01-26unlikely to be porteddevtools.jsonview.enabled = trueFull
374
BetterStop2052013-04-16port unlikelydev didn't even respond to e10s requests back then
375
Browser ViewCan't fint this anywhere but it's very useful. Allows developers to quickly open sites in other browsers for testing.See "Open With" alternatives.
376
Super Drag9’6042014-09-17Glitter Drag
377
Fire Drag
378
SixOrNot3’2802016-12-28Due to WE limitations, a rewrite would mean losing more than half of the functionality
379
Disable WebRTC Indicator Overlay5522016-06-24
380
Downloads Window13’1202017-07-12
381
Rotate Image4’6232016-02-01Rotate and Zoom Image
382
Exif Viewer43’2052017-10-26port in worksMay not be available in time for Firefox 57wxIF
383
Hide Tab Bar With One Tab22’8672015-02-22
384
Image Resizer/Scaler1’9102017-05-17Image ZoomerMostly
385
Profile Switcher25’2802016-06-26won't be portedContainers ExperimentLimited
386
Save Image in Folder20’0912015-12-12
387
Auto Copy 214’5232016-04-28AutoCopy (WebExtension)Partial
388
Copy On SelectMostly
389
Iceweasel Branding 7182016-07-30
390
About:about Button108might be ported if WE API permitsabout:about ButtonPartialCurrently can't open most pages (Bug 1269456)
391
What about:..6522016-09-11
392
Add Bookmark Here ²8’8452017-07-05
393
Clear Site Cache4’9402016-09-16unclear; issue open
394
Configuration Mania23’9652017-08-27won't be ported
395
ErrorZilla Plus1’2882016-02-29
396
Extensions Options Menu4’6352015-12-18
397
Googlebar Lite20’1702016-02-08won't be ported
398
Greasy Scripts1’7732016-01-23won't be ported
399
HTML Validator32’0832017-10-04
400
Image Context Menu5952016-02-15FoxyImagePartialmisses "reload" and "search"
401
Neo Diggler5772008-05-31port unlikelyclear address bar, navigate up ("breadcrumbs" from URL), find adress-bar URL in Archive.org, Web Citations, Google Cache (useful e.g. when a page doesn't load or is no longer found)Navigate Up WEPartialonly the "breadcrumbs" part covered
402
Wayback HelperPartialcovers only "find in Archive.org"
403
The ArchiverPartialonly "find in Archive.org" and WebCitations
404
Pocketwon't be portedRemoved; partly integrated into FirefoxIn my Pocketadds some features Firefox skipped
405
Wallabaggerself-hosted alternative
406
Quick Locale Switcher189’3642013-02-26won't be portedswitch between locales, set preferred locale per site
407
Quick Locale Switcher 22’1472016-10-18won't be portedFork of Quick Locale Switcher
408
Second Search9632016-02-04port unlikelyIssue open. Part of the functionality (one-off search) is already implemented in FF directly.
409
Server Switcher7872014-05-05port unlikelyDomainswitcherLimitedWould need some work
410
TableTools211’7862012-05-09port unlikelyTableSorterPartialUserScript; no filter, no copy-as
411
TagSieve6192016-01-01port is possible.
412
Wikiwand9’3242016-03-08WikiWand (webextension port)Full3rd party port
413
OpenDownload²26’9142016-12-09won't be ported
414
Privacy Badger418’9082017-10-25ported
415
It's All Text7’8892016-10-05
416
MEGAA Chrome version exists so port should be possible
417
Linkification14’5092010-02-16port unlikelyLast Update 2010
418
Check Placeswon't be ported
419
Live Http Headers (clone)7’2342016-07-16after last update 2011 picked up by other developer as cloneDeveloperTools › Network (built-in)
420
Linkificator2’4912017-10-12port in works
421
Save-To-Read4’5122013-05-16port unlikelyNot sure if it will be updated. If anyone knows a replacement for it, please add.
Last life-sign of dev on AMO in 10/2015.
Tab SaverPartial
422
close-other-tabs-by-double-click2092016-02-27Clear Tabs
423
Close Other Tabs ButtonPartial
424
PassIFox8’9262016-11-02port in works
425
Anti-Alias Tuner5’0622015-11-28
426
Wiktionary and Google Translate50’5282016-04-11Offers a lot of features that don't exist in other translation extensions. Offers Wiktionary definition, pronunciation key, Google Translate and pronunciation in English and another language of choice. Which makes it possible to use it as an English-English dictionary AND foreign language-English dictionary at the same time.
No response from developer on e10 even, so it's unclear if this is still worked on.
Quick DictionaryMostlyMostly UI and ease-of-use difference, with small differences in functionality. Supports bilingual dictionary and Google Translate, but no side-by-side definitions. Cannot set up to open by simply selecting the text. Extention works in a new window rather than a simple pop-up. Seems not to work on some websites and text fields.
427
Instant Translate: Ultimate TranslatorLimitedOnly translation. No Wiktionary. No pronunciation key. No dual-language translation. No English monolingual dictionary.
428
translaLimited
429
Nagios Checker7’2672011-01-04port unlikelySource repository has been removed, no recent activity seen from the author; most likely droppedimoinFull
430
Cleanest Addon Manager10’2002016-08-27port unlikelyNo information available.?Hilite also legacy.
431
Calomel SSL Validation7’8222016-06-13port in works"Sorry for the bad news. Thanks for everyone's support. When we are able to query the TLS information using WebExtensions we will try a re-write of this addon sometime in the future." - from addon page. bug 1322748.?Cypher fox also legacy.
432
Blank your monitor + easy reading9’4402015-04-18port unlikelyNo recent activity by the author since 2015 on wordpress blog. Firefox Reader ViewPartial
433
Newsfox25’5212016-02-27Support siteFeedbroPartialSage + Bamboo are legacy also.
434
Save Images33’5922017-08-30port unlikelyDeveloper commentDownload all imagesPartialdai saves current tab only.
435
Speed Dial221’9192015-9-12port unlikelyNo information available, already incompatible.Group Speed DialPartialColour options missing.
436
Bookmarked Speed DialPartialColour options missing.
437
Toggle Animated Gifs14’4782016-8-1port unlikelyNo information available.?
438
Wired Marker6’7382017-8-21port unlikelyNo information available.?
439
GNU_Terry_Pratchett1’3892017-09-13ported
440
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