Waterfox Classic previously allowed an automated switch to single-process mode, in response to adding (or enabling) any extension that is incompatible with multi-process. This automation ended with Waterfox Classic 56.0.3.
Begun at https://redd.it/8c77ii, but Reddit can not handle lists of this length.
This list includes some of the legacy extensions that were reportedly incompatible. Relevant reports were captured in the Internet Archive Wayback Machine; access to original reports ended in October 2018.
- About config button | captured | caa:addon/about-config-button
- Add-ons Manager Context Menu | captured | caa:addon/am-context
- Advanced Cookie Manager | captured | caa:addon/cookie-manager
- Advertising Cookie Opt-out also known as Interest-based advertising opt-out (by Google) | captured | caa:addon/interest-advertising-opt-out
- Autofill | captured | caa:addon/autofill-262804
- Autofill Forms | captured | caa:addon/autofill-forms
- AutoHiDPI | captured | caa:addon/autohidpi
- Back to Owner Tab | captured | caa:addon/back-to-owner-tab
- Basic Text Editor | captured | caa:addon/basic-text-editor
- better-youtube-subs also known as Youtube Subscriptions Grid | captured | caa:addon/better-youtube-subscription
- BetterPrivacy-signed | captured | –
- BitTorrent WebUI+ also known as Bit Torrent WebUI+ | captured | caa:addon/bittorrent-webui-120685
- Black Google Theme | captured | caa:addon/black-google-theme
- Black Youtube Theme | captured | caa:addon/black-youtube-theme
- Blank Your Monitor + Easy Reading | captured | caa:addon/blank-your-monitor-easy-readin
- Bookmark Shortcut Keys | captured | caa:addon/bookmark-shortcut-keys
- BookmarkMenuHider | captured | caa:addon/bookmarkmenuhider
- bug489729(Disable detach and tear off tab) | captured | –
- Cache Disabler | captured | caa:addon/cache-disabler
- CacheViewer | captured | caa:addon/cacheviewer
- Classic Add-ons Archive | captured | caa:about
- Classicish Add-on Manager | captured | caa:addon/classicish-addon-manager
- Color That Site! | captured | caa:addon/color-that-site
- ColorfulTabs | captured | caa:addon/colorfultabs
- Context Menu Image Saver | captured | caa:addon/context-menu-image-saver
- CopyAllURLs | captured | caa:addon/copyallurls
- Custom New Tab | captured | caa:addon/custom-new-tab
- Custom Tab Width | captured | caa:addon/custom-tab-width
- Diigo Toolbar 5.1.0.38 | captured | caa:addon/diigo-web-collector
- Disable Add-on Compatibility Checks also known as checkCompatibility | captured | caa:addon/checkcompatibility
- Disable Addon Compatibility Checks (Version 4-56) also known as checkCompatibility2 | captured | -
- Double-click To Reload Tab | captured | caa:addon/double-click-to-reload-tab
- Download Statusbar | captured | caa:addon/download-statusbar
- DownThemAll! AntiContainer | captured | caa:addon/downthemall-anticontainer
- Drag & DropZones | captured | caa:addon/drag-dropzones
- Easy Copy | captured | caa:addon/easy-copy
- Edit Bookmark Plus | captured | caa:addon/edit-bookmark-plus
- ExExceptions | captured | caa:addon/exexceptions
- Extension Conflict Troubleshooter also known as Extension Conflict Troubleshooter for Firefox | captured | caa:addon/extension-conflict-troubleshoo | more recent legacy release at http://softwarebychuck.com/fect/fect.html
- Extension Manager Extended | captured | caa:addon/extension-manager-extended
- Fast Video Download | captured caa:addon/fast-video-download-with-searc
- FEBE | captured | caa:addon/febe
- Feed Sidebar | captured | caa:addon/feed-sidebar
- Firefogg | captured | caa:addon/firefogg
- FireFTP button | captured | caa:addon/fireftp-button
- firelink also known as FireLink - Copy link with keyboard shortcuts | captured | caa:addon/firelink
- FireTitle | captured | caa:addon/firetitle
- FlashGot also known as FlashGot Mass Downloader | captured | caa:addon/flashgot
- FlexBar | captured | caa:addon/flexbar
- flickr original | captured | caa:addon/flickr-original-10049
- Focus Mode | captured | caa:addon/focus-mode
- Font Fiddler | captured | caa:addon/font-fiddler
- Force Content-Type | captured | caa:addon/force-content-type
- Forecastfox Weather | captured | caa:addon/forecastfox-weather
- FormFox | captured | caa:addon/formfox
- FrameExt | captured | caa:addon/frameext
- Fresh Flower | captured | caa:addon/fresh-flower
- FireShot also known as Full Web Page Screenshots (♥♥♥♥♥) | captured caa:addon/fireshot
- FurAffinity Extender | captured | caa:addon/furaffinity-extender
- Garmin Communicator | captured | caa:addon/garmin-communicator
- gfycat Companion | captured | caa:addon/gfycat-companion
- GitHub Extension Installer | captured caa:addon/github-extension-installer
- Google Docs Viewer also known as Google Docs Viewer (PDF, DOCX, PPTX, XLSX, etc...) | captured | caa:addon/google-docs-viewer-pdf-doc-
- Google Similar Images also known as Google Image Search | captured | caa:addon/google-similar-images
- Google Translator for Firefox | captured | caa:addon/google-translator-for-firefox
- Grab and Drag | captured | caa:addon/grab-and-drag
- GrabMyBooks | captured | caa:addon/grabmybooks
- Highlight Tab | captured | caa:addon/highlight-tab
- Hugo Search All Tabs | captured | caa:addon/hugo
- Icon Effects | captured | caa:addon/icon-effects
- IE Tab 2 (FF 3.6+) also known as IE Tab V2 (Enhanced IE Tab) also known as IE Tab (Blackfish Software) | captured | caa:addon/ie-tab-2-ff-36
- InfoLister | captured | caa:addon/infolister
- Inline Audio Player | captured | caa:addon/inline-audio-player
- Integrated Authentication for Firefox | captured | caa:addon/integrated-auth-for-firefox
- It's All Text! | captured | caa:addon/its-all-text
- Local Music Player | captured | caa:addon/local-music-player
- Location Bar Enhancer | captured | caa:addon/ui-enhancer
- Long URL Please Mod | captured | caa:addon/long-url-please-mod
- Media Loop | captured | caa:addon/media-loop
- MemChaser | captured | caa:addon/memchaser
- MinUI | captured | caa:addon/minui
- Modify Headers | captured | caa:addon/modify-headers
- Mozilla Archive Format also known as Mozilla Archive Format, with MHT and Faithful Save | captured | caa:addon/mozilla-archive-format
- MozRepl | captured | caa:addon/mozrepl
- New tab toolbar button | captured | caa:addon/new-tab-toolbar-button
- Night Mode Eye Guard | captured | caa:addon/eyeguard
- NoRedirect | captured | caa:addon/noredirect
- Noise Control Sidebar | captured | caa:addon/noise-control-sidebar
- NoUn Buttons also known as NoUn Buttons: Unmerge Back & Forward Buttons/Menus | captured | caa:addon/noun-buttons
- Nuke Anything Enhanced | captured | caa:addon/nuke-anything-enhanced
- nURL Suffix also known as nURL Suffix (new URL Suffix) | captured | caa:addon/nurl-suffix
- Online Reload | captured | caa:addon/online-reload
- Open in Browser | captured | caa:addon/open-in-browser
- Open Link in Silent Tab | captured | caa:addon/open-link-in-silent-tab
- PassIFox | captured | caa:addon/passifox
- PDFescape Extension | captured | caa:addon/pdfescape-extension
- pdfit | captured | caa:addon/pdfit
- Periodic Memory Usage Dumper | captured | caa:addon/periodic-memory-usage-dumper
- PictuTools | captured | caa:addon/pictutools
- Platypus | captured | caa:addon/platypus
- PlusFixer | captured | caa:addon/plusfixer
- Prostetnic highlighter | captured | caa:addon/prostetnic
- QuickPasswords | captured | caa:addon/quickpasswords
- QuoteURLText | captured | caa:addon/quoteurltext
- RawGit | captured | –
- Redirect Remover | captured | caa:addon/redirect-remover
- Reload on Idle | captured | caa:addon/reload-on-idle
- Remove New Tab Button | captured | caa:addon/remove-new-tab-button | caa:addon/remove-new-tab-button
- Replacetabs Extension | captured | caa:addon/replacetabs-extension
- Restore Control | captured | caa:addon/restore-control
- Resurrect Pages | captured | caa:addon/resurrect-pages
- Resurrect Pages (isup edition) | captured | caa:addon/resurrect-pages-isup-edition
- Save File to | captured | caa:addon/save-file-to
- ScrapBook | captured | caa:addon/scrapbook
- ScrapBook X | captured | caa:addon/scrapbook-x
- Scroll here | captured | caa:addon/scroll-here
- Scrollmap | captured | caa:addon/scrollmap
- ScrollUp | captured | caa:addon/scrollup
- ScrollyFox | captured | caa:addon/scrollyfox
- selectivecookiedelete | captured | caa:addon/selectivecookiedelete
- Self-Destructing Cookies | captured | caa:addon/self-destructing-cookies
- Send to Google Docs | captured | caa:addon/send-to-google-docs
- Send to Kindle for Mozilla Firefox | captured | caa:addon/sendtokindle
- Simple Storage Editor for Addon SDK | captured | caa:addon/simple-storage-editor-for-a
- Smaller View | captured | caa:addon/smaller-view
- SnapBack | captured | caa:addon/snapback
- SnapBackR | captured | caa:addon/snapbackr
- Sothink Web Video Downloader for Firefox | captured | caa:addon/sothink-web-video-downloader
- Speed Dial | captured | caa:addon/speed-dial
- Speed Start | captured | caa:addon/speed-start
- SQLite Manager | captured | caa:addon/sqlite-manager
- SubmitToTab | captured | caa:addon/submittotab
- Tab Data (+Memory usage) | captured | caa:addon/tab-data
- Tabs Menu | captured | caa:addon/tabs-menu
- Text-to-Image | captured | caa:addon/text-to-image
- The Addon Bar (Restored) | captured | caa:addon/the-addon-bar
- Thumbnail Zoom Plus | captured | caa:addon/thumbnail-zoom-plus
- Toggle Document Fonts | captured | caa:addon/toggle-document-fonts
- Toggle Proxy | captured | caa:addon/toggle-proxy-51740
- Unified Sidebar | captured | caa:addon/unified-sidebar
- Unwrap Text | captured | caa:addon/unwrap-text
- URL in Tab Tooltip | captured | caa:addon/tab-tooltip
- User Agent Switcher | captured | caa:addon/user-agent-switcher
- User-Agent JS Fixer | captured | caa:addon/user-agent-js-fixer
- View Tab | captured | caa:addon/view-tab
- ViewMarks | captured | caa:addon/viewmarks
- Vimium | captured | caa:addon/vimium
- Vimperator | captured | caa:addon/vimperator
- Web Mirror Viewer | caa:addon/web-mirror-viewer
- YourOnlineChoices Plugin | captured | caa:addon/youronlinechoices-plugin
- Zombie Keys (Multilanguage Keyboard) | captured | caa:addon/zombie-keys
- Zoom Buttons | captured | caa:addon/zoom-buttons
The list is not intended to be comprehensive.
For a while, reporting was unreliable – extensions that were incompatible were misrepresented as compatible, and so on.
Very few of the named extensions are actively used by me. Most were installed only for support purposes (to help identify issues that were reported by other users), and so on.
caa:
URLs:
- are for users of the Classic Add-ons Archive
- can be pasted to the address bar.
Please note, this extension is no longer supported by Mozilla. From http://web.archive.org/web/20170831184214/https://addons.mozilla.org/en-US/firefox/addon/add-on-compatibility-reporter/:
… After installing the ACR, you can report if the Firefox add-ons that you're using are working properly. If you notice that one of your add-ons doesn't seem to be working the same way it did in previous versions of the application, just open the Add-ons Manager and click 'Report Issue' next to that add-on to send a report to Mozilla.
Even if your add-ons all work fine, if they're marked incompatible, please let us know that they work fine by submitting a success report …
This tool only works on legacy add-ons, which will stop working on Firefox 57. …
Installing the reporter may be the simplest way to tell whether an installed extension was, or is, marked as incompatible with multi-process Firefox or multi-process Waterfox.
In the Classic Add-ons Archive
- caa:addon/add-on-compatibility-reporter/
Add-ons Manager Context Menu (captured) – https://github.com/LouCypher/AM_contextmenu/ – made it easy to reach the compatibility reports page for any installed extension.