Open the tanmatra.exe or KickKeys.exe file. A small icon will typically appear in your system tray.

Avro Keyboard : A widely used, free, and open-source phonetic typing tool.

While primarily a Windows application, some versions are noted for compatibility with macOS, Linux, and even mobile platforms like Android and iOS.

At approximately 13.7 MB, it is a focused utility that operates with low system overhead. How to Install and Use Tanmatra Bangla

Download the .rar or .exe file and extract it to your system.

Open a word processor (e.g., MS Word), select a compatible Tanmatra font, and click the tray icon to "trap" the application for Bengali typing.

The software uses a unique "trapping" mechanism where it captures keystrokes in applications like Microsoft Word or WordPad to convert them into Bengali characters.