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- Addon/Module Projects - Projects that are designed to "add on" to dspace without altering core libraries.
- [Prototype Projects|http://scm.dspace.org/svn/repo/sandbox/ - Prototypes are usually branches of the core codebase, where experimental development of the core codebase can happen. Oftentimes these projects are unstable. If they become widely accepted and stable, they will usually be moved to either the Addon/Module Projects or the Primary Codebase (Trunk)
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