About this Collection
Add ons that improve or enhance the spelling features of FireFox.
10 Add-ons in this Collection
United States English Spellchecker for Firefox, Thunderbird and SeaMonkey by Kevin Atkinson and Geoff Kuenning.
To enable, right-click in a multi-line text box, select "Languages", then "English (United States)".
Russian spellchecking dictionary
Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.
Australian English Dictionary for Mozilla applications.
For some reason, Mozilla doesn't have a Canadian localization team, but I know that even the British dictionary doesn't quite cut it for the truly patriotic.
Checks the (whole) web page (and not the text inside edit box) for spelling mistakes and highlights it.
Toggles dictionaries automatically or manually and displays the currently selected one
After the Deadline is an intelligent grammar, style, and spell checker. It works with most web sites.
OpenMedSpel for Mozilla Firefox, Thunderbird, and SeaMonkey is free and open source medical spell checking dictionary that includes nearly 50,000 medical terms ranging from abdominis to zygomatic.