Hgview - qt4 or curse replacement for hgk (available on Debian or Ubuntu with apt-get install hgview, 'yum install hgview' on Fedora) HgkExtension - A port of the gitk history browser, included by default with Mercurial (requires Tcl/Tk 8.4 or later)
MacMercurial - A GUI front end for common Mercurial operations (Mac OS X 10.4 or later) (No longer maintained) MacHg - A multithreaded, fast, fully featured Mercurial client for Mac OS X 10.6+. SourceTree - Fast & friendly client for both Mercurial and Git on Windows 7+ and Mac OS X 10.7+ (free) Last version to support Mercurial is SmartGit 19.1.8. Unfortunately, it has been renamed to SmartGit, and Mercurial support has been dropped. SmartGit/Hg - A solid cross-platform client for Mercurial, Git and SVN (free for non-commercial use) (supports hg 4.8.x only). Hgtui - A TUI-based tool written in Python. Gwsmhg - A PyGTK-based work space manager using hg and mqĮasyMercurial - A simple, user-friendly cross-platform client, originally based on HgExplorer, designed with new users and straightforward setups in mind
Gquilt - A PyGTK-based wrapper for quilt and mq TortoiseHg - OS-level Mercurial integration on Windows (similar to TortoiseSVN), Linux (stand-alone or with Nautilus integration)