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) Features Simple: 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