Unlike GitHub, which is controlled by centralized Microsoft servers that are susceptible to data loss, hacks, and other monolithic network ills. RAD is a better iteration of GitHub at a fraction of the price.
However, a little known crypto project called Radicle (RAD) enables the same type of remote programming collaboration, but on blockchains.
RAD has the same offering except it's completely decentralized on distributed networks of shared blockchains.