Unit Conversion Bot

https://t.me/UnitConversionBot

The bot lets you convert different units right in your Telegram client: I built and still operate it as a small, reliable service, owning the code, hosting, and long-term maintenance.

Unit conversion example

https://github.com/maltsev/UnitConversionBot

Technologies used:

AWS Lambda,
Python,
Telegram bot API.

I published the first version of the bot in March 2016. It’s still active and maintained.