Maintained but new features not added last release from 2008 Official site offline latest release July 13, 2007 ( )
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Most Java Platforms ( Unix-like, Windows, macOS) Distributed version control systems usually use a merge concurrency model. In a merge model, users may freely edit files, but are informed of possible conflicts upon checking their changes into the repository, whereupon the version control system may merge changes on both sides, or let the user decide when conflicts arise. In a lock model, changes are disallowed until the user requests and receives an exclusive lock on the file from the master repository.
Repository model describes the relationship between various copies of the source code repository.