Kallithea is a free software source code management system supporting two leading version control systems, Mercurial and Git. Developed by Software Freedom Conservancy
License: Open Source
Kallithea is an open-source, self-hosted platform offering flexibility in version control with support for multiple backends, while GitHub is a widely adopted platform with extensive integrations and community features but is not open source. Kallithea is ideal for users wanting full control over their repositories, while GitHub excels in collaboration and ease of use.