I have used Microsoft Indic Language input tool for typing regional languages in Windows 7 & XP. But it is not available for windows 10.
Suggest me some software for tamil typing in Windows 10.
You can use the following tools in Windows 10
1. Google Input Tool
2. NHM Writer
I personally use both of the above, but Google input tool works at best for Unicode input. For typing with other fonts (TAB, TAM, Bamini), you can use NHM Writer.