Matrix: This is my preferred method of communication with others, balancing usability with a central identity that is not deeply attached to my IRL identity. Also supports VoIP!
Mail: Also preferred, if you need long form communication. I prefer mails from other proton accounts in general, since that ensures E2EE in such cases.
Signal: If you want to interact with me in a fashion that needs signal (or matrix chats are being a piece of shit in general), contact me via other methods and set up a signal identity exchange.
Mastodon: My mastodon account for now :)
Codeberg: My git forge of choice!
Github: I use this solely to contribute to projects that are hosted on github, and sometimes mirror some of my better projects for wider reach.