https://addons.mozilla.org/en-US/firefox/addon/873Padma is a system for transforming Indic text between public and proprietary formats. The technology currently supports Telugu, Malayalam, Tamil,
Devanagari (including Marathi), Gujarati, Bengali, and Gurmukhi.
Indic scripts suffer from lack of standards support in various OS and platforms. As a result, many public and proprietary schemes have been adopted over time by different groups and businesses. Padma's goal is to bridge the gap between closed and open standards until the day Unicode support is widely available on all platforms.
Padma transforms Indic text encoded in proprietary formats (ex: dynamic fonts) automatically to Unicode. Padma also has support for transforming from ISCII and transliteration schemes like ITRANS and RTS (Telugu only).
https://addons.mozilla.org/en-US/firefox/addon/2573Indic IME toolbar facilitates typing in Indian Languages in web pages.
The Indic IME toolbar project was started to address the need of typing in Indian Languages in Web forms, Emails etc. Such tools are available for Windows XP users through the Language packs or on Trail and User basis from different vendors. But for Linux users, there are no such tools available unless the entire system or the application is Localized to the Indian Languages. This IndicIME toolbar will serve the purpose of those users who want to key in text in Indian Languges in Web pages, but do not want to localize their entire Operating System or Browser Application.
https://addons.mozilla.org/en-US/firefox/addon/3990Allows typing into phonetic Russian, Ukrainian, Amharic, Arabic, Armenian, Hindi Davangari, Hebrew, Mongolian,greek... transforming translit into the choosen language.