Subversion

Subversion is a free, centralized version control system.

Features

• Storing the full change history of tracked objects (files, directories, symlinks) in a centralized repository, including attribute changes ("metadata"), relocation, renaming and deletion
• Copying objects with history branching - when copying two separate objects with a common history appear in the repository
• Support of transferring changes between object copies, including the full merging of copies (in the working copy; without history merging)
• Support of branching: creation of branches, merging of branches
• Support of labels (by directory copying)
• History of changes and object copies (including branches and directories) are stored in the form of linked copies - "cheap" (not time and disk resource consuming) during creation and storage
• Support of competitive (including simultaneous, with isolation of transactions) multiuser work with the repository and, in most cases, automatic merging of changes of different developers (in the working copy)
• Commits of changes in the storage (including multi-object ones) are organized in the form of atomic transactions
• Network exchange between the server and the client foresees the transfer of only the differences between a working copy and the repository
• Equally efficient work with both text and binary files is provided
• Different options for storage access
• The output of the command line client is equally suitable for reading and parsing
• Possibility of storage mirroring
• Two possible internal repository formats: a database or a set of regular files
• Internationalized program messages (using locale settings)
• Libraries for the languages PHP, Python, Perl, Java allow to embed the Subversion client functionality into the programs written in these languages.
• Multilevel library architecture, originally designed for the client-server model.