Compare PureCM

	Subversion	Visual Source Safe	PureCM
Project Visibility	Folder and files view	Folder and files view	Projects view optimised for release planning and SCM
	No support for release planning	No support for release planning	Full support for release planning (Professional only)
	No support for task tracking	No support for task tracking	Integrated task workflow and tracking (Professional only)
	Plugins needed to link changes to issues, no support when merging	No support for task-based development	Fully integrated, optimised for parallel development (Professional only)
	No link between branches or labels	No link between branches or labels	Branch hierarchy with customisable change inheritance ("merge rules")
	Different clients needed	Windows only GUI	Cross-platform GUI with task-specific views
	Command line interface	No command line interface	Command line interface
	No tracking of ongoing file changes	No tracking of ongoing file changes	Live checkout tracking
	Changelists to separate tasks in a workspace	Individual file-based checkins only	Local changesets to separate tasks in a workspace
Parallel Development	Changesets and atomic commits	Individual file checkins and no atomic commits	Changesets and atomic commits
	Limited refactoring support	No refactoring support	Full refactoring support
	Cheap branching, incomplete merge tracking	Branches are physical file and folder copies, inefficient and slow	Stream-based branching with full merge tracking
	Merging via workspace only	Merging of individual file changes only	Merging via workspace or directly on the server
	Some support to integrate feature branches	No support for feature branches	Full support for feature branches (Professional only)
	No visual folder diff	No visual folder diff	Visual stream/folder diff
	No support for shelving	No support for shelving	Shelving to checkpoint unfinished changes
Distributed Development	Server connection via TCP/IP or HTTPD	Windows folder share	Server connection via TCP/IP
	No revisioning capability without server connection	No revisioning capability without server connection	Full support for offline development
	No Proxy Server available	No Proxy Server available	Proxy Server available to cache repository data (Professional only)
	No built in support for data encryption	No built in support for data encryption	Encypted data transfer using SSL/TLS and VPNs possible
Security and Interfaces	No Active directory support	Active directory authentication	Active directory authentication
	User/password authentication	User/password authentication	User/password authentication
	No support for access control lists (ACL)	No support for access control lists	Access control lists from repository to file level
	Java API for 3rd party integration	No APIs	.NET and Java APIs for 3rd party integration
Platform Support	Windows	Windows	Windows
	Linux, Unix's		Linux, Solaris
	Mac OS X		Mac OS X