GitHub, launched in April 2008, has reached a milestone with the registration of its three millionth user during an all-hands winter summit, highlighting rapid growth in its developer community. The platform reached its first million users by September 2011 and its second million by August 2012, with the latest million joining in just the past five months, illustrating its increasing popularity among developers who collaborate to build software. As GitHub anticipates hosting its five millionth repository soon, the platform continues to play a crucial role in the software development ecosystem. The community is invited to celebrate these achievements at an event in San Francisco, expressing gratitude for the support and contributions from its users.