Lachit - an Assamese Spell Checker by Bitopan Das, Mridul Kumar Sharmah

It is released under the banner of Bhaxa Xahitya Xonmiloni, Axom and under the GNU General Public License 3.0.

See: https://addons.mozilla.org/en-US/firefox/addon/assamese-spell-checker/
as_IN.dic and as_IN.aff are from assamese_spell_checker-1.0.1.2resigned1.xpi