For the time being I am sharing the hindi IME.
Urdu Input Method (Added on 22 Nov 10)
(as requested by my friend SZH)
Gujrati input Method (Added 9 Dec 11) requeste by Niraj
Malayalam input method (Added 9 Dec 11) requested by സിവില് എഞ്ചിനീയര്
From above few URLs it seems we can get other languages also by just replacing your language name in above URLs, For language list and correct spelling check at http://www.google.com/ime/transliteration/
I will try for other languages also on request.