- AddMoreTextToClipboard
- Add to clipboard
- Annotating the Web
- Append to Clipboard
- AutoComplete
- Auto Copy
- AutoCopy (WebExtension)
- AutoCopy 2
- AutoCopy Addon
- AutocopySelection2Clipboard
- Auto Cursor
- Autofill Forms
- AutoFill Forms (e10s)
- AutoFormer
- BBCodeXtra
- BBComposer
- Case Changer
- Casey Case Converter
- Change to Simple Text
- Character Palette
- CheckBoxMate Lefedor Edition
- CheckFox
- Clear Input Field Text
- Clear Text Fields
- Clipboard Plus
- Clippings
- Clipple
- Closy
- CoLT
- ContentEditable
- Convert WebPage To PDF
- Copy Links
- Copy Text without Selecting
- Cycle Input Focus
- Cycle Input Focus Plus
- Digraphs
- drag-checkbox
- Drag-Select Link Text
- dragdropupload
- drag to scroll (reloaded)
- Dummy Form Filler
- Easy AutoFocus
- Easy Copy Paste
- Easy Markup
- Easy ■■■■ing
- Edit any page
- Editor
- Emoji Box
- Emoji Keyboard
- EmotiConverter
- Enable Auto Complete
- File Title
- Filtered clipboard
- Find and Replace for FireFox
- Focuser
- Focus Follows Input
- Force Content-Type
- Formlet
- FormSave
- Form Saver MOD
- form zenkaku
- Fox Input
- Free Textarea
- Handy Calculator
- HiliteOnSelection
- IME Area
- InFormEnter
- Input autofocus
- Input Changer
- Insert Unicode
- Invert Input
- It's All Text!
- Jot
- jumptosearchbar
- Keylogger Beater
- Kitsune
- kl
- Lazarus: Form Recovery
- Linkify
- Link Stunner
- MarkDown Editor
- Markdown Editor for Firefox
- Markdown Here
- markdown table editer
- Modify Headers
- Modify Response Headers
- MultiCopy
- Multicopy
- Multiple Checkbox Checker
- MyWords
- NoClick
- nQuote
- Page Hacker
- Page Hacker Revived
- Password Mask Changer
- Paste Email
- Paste Email Plus
- Paste Quote
- PDF Draw
- PeraPera-kun
- Print as Plain Text
- Quick Copy 2
- QuickWikiEditor
- Random Select Radio Buttons
- Remove Anything
- Reply Robot
- Reverse Text
- SaveAsFilename
- SaveSel
- Save Text Area
- ScrapBook
- ScrapBook+
- Scrapbook Lite
- ScrapBook Plus 2
- ScrapBook X
- ScribeFire Classic
- ScribeFire Next
- Select like a Boss
- SimpleFill
- Simple Form Fill
- Simple Form History
- Smart Texter
- Smiley Xtra
- Spiders Helperli
- stf
- Sticky Fields
- Super Paste!
- Tabbed View Source
- Tab Complete NG
- Table2Clipboard
- Textarea Cache
- Textarea Cache Lite
- TextFast
- TextMarker Go
- TiddlyFox extension for Firefox
- Timeger
- TitleCase
- Title Save
- Unicode Emoji
- Universal Edit Button
- View Source Choice
- ViewSourceWith
- Vixen
- wasavi
- Web Editor
- WebMynd
- Webpage Editable Switch
- Web pages scanner
- Web ScrapBook
- WebToPDF
- wheelclear
- Wired-Marker
- withExEditor
- Wrap Switcher
- Write Area
- Write My Language
- Xenotix Keylogger
- zaqwes_edit_page
- Zawgyi-One Typing Correction
- Zombie Keys
- かんたん文字数カウント
- テキスト整形君
- 紙copi-Add-on