Git!

Mercurial is a free, distributed source control management tool. It efficiently handles projects of any size and offers an easy and intuitive command line interface. Mercurial efficiently handles projects of any size and kind.

Apache Subversion (SVN) is a centralized version control system similar to CVS (Concurrent Versions System) , but based on the concept of change-sets instead.

Simple, high-reliability, distributed software configuration management. Fossil is a distributed version control system, bug tracking system and wiki software server for use in software development.

Team Foundation Server (commonly abbreviated TFS) is a Microsoft offering for source control, data collection, reporting, and project tracking, and is intended for collaborative software development projects. It is available either as stand-alone software, or as the server side back end platform for Visual Studio Team System. (VSTS)

BitKeeper is the original distributed source management system. Now available as Open Source under the Apache 2.0 License.BitKeeper is a fast, enterprise-ready, distributed SCM that scales up to very large projects and down to tiny ones.Download Now!BitKeeper 7.2.1 CE(Binaries and Source)FeaturesSimple: An easy to use command line interface.Scalable: Nested Repositories are submodules done right! Version control collections of repositories.Flexible: Hybrid mode for binary files that uses a cloud of server for binaries instead of bloating the source repositories.Accurate: Tracking of file operations like creates, deletes, and renames.Safe: All file accesses validate checksums for integrity. All file writes include redundancy for error correction.Dependable: Highly accurate auto-merge that uses the whole history to resolve conflicts. Most other systems use variations of diff3.Discernable: Source annotations instantly available.Fast: High performance and scales to very large repositories.Free: Licensed under the Apache Version 2 license »

Darcs is an advanced revision control system, for source code or other files. It is fully distributed, and supports lazy fetching of the remote repository (fetching only what is needed at the time, rather than all history). It works best with text files, but it can also store binary files.

EasyGit is a wrapper for git, designed to make git easy to learn and use.

An open source, distributed version control and bug tracking system for Windows, Mac OS X, and Linux.

monotone is a free distributed version control system. It provides a simple, single-file transactional version store, with fully disconnected operation and an efficient peer-to-peer synchronization protocol. It understands history-sensitive merging, lightweight branches, integrated code review and 3rd party testing. It uses cryptographic version naming and client-side RSA certificates. It has good internationalization support, runs on Linux, Solaris, Mac OS X, Windows, and other unixes, and is licensed under the GNU GPL. »

The Perforce Software Configuration Management System features comprehensive SCM capabilities built around a scalable client/server architecture. Users can access the Perforce Server through a range of Perforce client software. Perforce can be deployed quickly and easily, and requires minimal administration even for large or distributed sites. The Perforce Visual Client, P4V, provides a graphical interface on Windows, Mac OS X, Linux, Solaris and FreeBSD. It includes a built-in merge feature, as well as Perforce's revision graph and Time-lapse View tools. »

Source Control, Version Control and Bug Tracking

Cross platform version control software