With keyboards for over 2000 languages, Keyman lets you type in your language anywhere. You can create your own keyboards with Keyman Developer. Keyman is completely free and open source, and runs on Windows, macOS, Linux, Android, iOS and web.
Sellinam enables Tamil text input on mobile devices. It suports Tamil phonetic keyboard too. It was first developed in the year 2003 and subsequently launched for public usage in 2005 on Ponggal day.This app doesn't have any features at the moment.
PolyglotKeyboard is an application for polyglots, for people, who need to type different languages (nearly) simultaneously. It allows using simple keyboard shortcuts for writing desired special characters found in different alphabets.This app doesn't have any features at the moment.