English United States (en-US) spellchecking dictionary.
This extension packages a subset of the original English wordlist created by Kevin Atkinson for Pspell and Aspell and thus is covered by his original LGPL license. The affix file is a heavily modified version of the original english.aff file which was released as part of Geoff Kuenning’s Ispell and as such is covered by his BSD license.
Thanks to both authors for their wonderful work.
Works with:
| Firefox | 2.0 - 3.0b4pre | |
| SeaMonkey | 1.1a - 2.0a | |
| Thunderbird | 2.0 - 3.0a1 |
IMPORTANT NOTE:
This spellchecker is for Firefox 2 (all languages excluding en-US) only, because Firefox 1.5.0.* doesn’t support a direct spellchecking. If you want to add this functionality to your copy of Firefox 1.5.0.* you must install SpellBound extension.
For Thunderbird 1.5.0.* look at "Dictionaries for Mozilla" webpage.
Thunderbird 2 en-US doesn’t need to install this spellchecker.
Install Now (242 KB)
How to Install in Thunderbird:
- Right-Click the link above and choose "Save Link As…" to Download and save the file to your hard disk.
- In Mozilla Thunderbird, open the extension manager (Tools Menu/Extensions)
- Click the Install button, and locate/select the file you downloaded and click "OK"

