Many of the bridges, bots, and integrations running on t2bot.io are free to use, although donations are greatly appreciated. Donations go directly to helping run the service, which is operated solely by TravisR.
If you're unsure of how to set anything up, or have any questions/requests, please visit #help:t2bot.io in matrix.
Bridges allow people on other platforms to interact with matrix users, and vice-versa.
Bots provide utility or entertainment to your rooms on matrix. Some of them are just silly as well.
Not everything t2bot.io runs is a bot or bridge. Here's everything else that may be of interest.