Spelljax, as the name suggests, is an online tool that lets you check for spelling errors in English and some other popular languages. The tool check only the spelling mistakes, not the grammar of your text.
You can either directly type the text in the web browser or copy-paste from another application that doesn't inbuilt spell checking capabilities like notepad or internet clipboards.

The spell checker is available at SpellJax.com.
SpellJax spelling checker functionality is pretty similar to what you have seen in GMail or even Firefox. The feature I liked most is that you cannot edit or type text while you are in the spell checking mode. Thanks Jan.
Related: Remove Incorrect Spellings from Firefox Dictionary
Reader Comments
Hi Amit,
You mentioned that the most interesting feature of this tool is that there is not need to type while spell check.
Can you throw more light on this ...
Also why should i prefer this over the out-of-the-box firefox functionality
Written on 25/8/07 1:10 AM
Firefox has this application inbuilt..And it is doing a good job!
Written on 25/8/07 7:43 PM
Nice tool, it definitely feels more accurate than Firefox's built in spellchecker.
Written on 26/8/07 5:21 AM