Hey HN, Me and a friend of mine want to do a series of screen casts of walking through and modifying open source code of popular libraries. The idea is to help people dig into OSS and to understand how the software they use work under the hood! I plan to start with JavaScript based front-end libraries. So other than the editor and terminal, there is the browser as well that needs to be shared. Any hints on what tools I can use to collaborate with my friend online? Final product is a open video playlist on YouTube. Ideally I'd like my friend to also modify the code when we're playing with it!