Infrabot is on GitHub and licensed under an Apache-style license, which basically means that you are free to get and use it for commercial and non-commercial purposes subject to some simple license conditions, however you can donate to support author for a cup of beer.
You can easily control your infrastructure via your Telegram Bot. Send commands to Bot, for execution during out of work time, when you are unable to get to the computer to fix problems when they happen.
There are many configuration possibilities of the Bot using Config editor. All parameters are well named and structured, however you can find detailed information about each of them on the documentation page.
You don`t want to mess up with plugins using text editor? No problem! You can easily create\edit and configure your plugins using Plugin editor.