Mercurial

Mercurial is a distributed version control system. Mercurial is dedicated to speed and efficiency with a sane user interface. It is written in Python.

Features

Fast

• Extremely high-performance delta-compressed storage scheme
• Optimized for disk layout and access efficiency
• Complete cross-indexing of files and changesets
• Bandwidth and CPU efficient HTTP and SSH sync protocols

Scalable

• Distributed development model supports unlimited numbers of developers
• Allows arbitrary merging between developer branches
• Doesn't significantly degrade with large numbers of files or changesets
• No waiting for locks!

Robust

• SHA1 integrity checking on repository data
• Append-only storage model with transaction journalling
• Fast full-repository verification
• Convenient backup

Easy to use

• Most commands are familiar to users of CVS and other systems
• Built-in command help
• Integrated stand-alone web interface
• Works with various GUI tools

Easy to adopt

• Runs on UNIX, MacOS X, and Windows
• Conversion tools available for many popular SCMs
• Allows a variety of usage models
• Supports user-defined hooks and extensions

Free

• Source code available under the GPL license
• Actively community supported and developed

Cases

• http://hg.netbeans.org/
• http://hg.openjdk.java.net/

Links

• http://www.selenic.com/mercurial
• http://download.huihoo.com/mercurial
• http://docs.huihoo.com/mercurial