Finally published! Mozilla Firefox and Thunderbird now have basic Lojban spell checking on their official website. Hope you'll appreciate!
Feel free to test, criticize, and propose enhancements.
For now the main issue I see is that the spell check engine does not recognize ".i" as a whole, and thus always underlines "i" alone (as it is noted ".i" in the dictionary).
If you have knowledge about how to open spell checking for other software, please share!
la .sykyndyr.