Bijoy Ekattor remains the gold standard for Bengali typing in Bangladesh. However, if you are searching for a free version for Windows 10, you need to be careful. The official software is paid, so most "free" downloads online come with risks.
Download Avro Keyboard from omicronlab.com . It is free, safe, and you can still save files in Bijoy font format if needed. Disclaimer: This post is for educational purposes. I do not provide cracked software or direct download links.
Here is everything you need to know. Officially: No. The latest versions (Bijoy Bayanno, Bijoy Ekattor) require a paid license.