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What are some of the software configuration management tools?

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What are some of the software configuration management tools?

Software configuration management tools include Rational ClearCase, DOORS, PVCS, CVS; and there are many others.
Rational ClearCase is a popular software tool for revision control of source code. Made by Rational Software.
DOORS, or "Dynamic Object Oriented Requirements System", is a requirements version control software tool.
CVS, or "Concurrent Version System", is another popular, open source version control tool. It keeps track of changes in documents associated with software projects. It enables several, often distant, developers to work together on the same source code.
PVCS is a document version control tool, a competitor of SCCS. SCCS is an original UNIX program, based on "diff". Diff is a UNIX command that compares contents of two files.

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