<software> The use of software systems to help program developers keep track of version history of source code modules as well as releases, parallel versions (code branches), etc. The free CVS was an early example, mostly replaced by Subversion and git. Perforce is a powerful commercial product. SCCS was once popular on Unix and VSS is Microsoft's offering.
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Nearby terms: source code « source code control « source code escrow « source code management » source language » source-level debugger » source of all good bits