StreamPi

Well, as the home page says it was created with the idea to make a robust alternative to the ElGato stream deck. There are other alternatives, but most of them really boil down to being fancy macro keyboards or are a huge pain in the butt to set up. The StreamPi seeks to make the experience as close to the original as possible; it actually integrates with software and utilizes API from OBS, Twitter, and more to bring that Streamdeck experience all for FREE.