Tom Preston-Werner

Thomas Preston-Werner (born May 27, 1979)[3] is an American software developer and billionaire entrepreneur. He is an active contributor within the free and open-source software community, most prominently in the San Francisco Bay Area, where he lives. He is best known as a co-founder and former CEO of GitHub, a web-based Git repository hosting service, which he co-founded in 2008 with Chris Wanstrath and P. J. Hyett.[4] He resigned from GitHub in 2014 when an internal investigation concluded that he and his wife harassed an employee.[5] Preston-Werner is also the creator of the avatar service Gravatar,[6] the TOML configuration file format,[3] the static site generator software Jekyll,[7][8] and the Semantic Versioning Specification (SemVer).[9] https://en.wikipedia.org/wiki/Tom_Preston-Werner