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= Some projects that use Mercurial = The following are some of the projects which are using ["Mercurial"] as their primary ["SCM"] system. * [http://selenic.com/hg Mercurial] (of course!) * [http://xenbits.xensource.com/xen-unstable.hg Xen] - a free hypervisor for virtualising kernels * [http://thunk.org/hg/e2fsprogs e2fsprogs] - utilities for managing the Linux ext2 and ext3 filesystems * Intel's ACPI team is using ["Mercurial"] for Linux kernel development == Projects with synchronized Mercurial repositories == The following projects have ["Mercurial"] repositories that are synchronized with their primary SCM system. These secondary repositories may not be (and often are not) maintained by the project, and thus generally have no official status. * [http://www.kernel.org/hg The Linux kernel] |
#pragma section-numbers 2 = Some Projects that Use Mercurial = The following lists some other projects that use Mercurial as their ''primary'' SCM system. Projects using a different SCM may have a [[ProjectsWithSynchronizedMercurialRepositories|synchronized Mercurial repository]]. <<TableOfContents>> == 0-9, A/B/C == ## 1 <<Anchor(num)>> * [[http://bitbucket.org/ArneBab/1w6/|1d6 roleplaying]] - free pen-and-paper roleplaying system ([[http://1w6.org|1w6.org]]) with Python implementation ([[http://sf.net/projects/rpg-1d6/|rpg-1d6]]). ## A <<Anchor(A)>> * [[http://formulacompiler.org/|Abacus Formula Compiler]] - a spreadsheet (functional computation model) to Java byte code compiler for Excel and OOo Calc * [[http://adiumx.com/|Adium]] - an open-source multi-protocol instant-messenger client for Mac OS X * [[http://adminton.wald.intevation.org/|Adminton (アドミントン)]] contains a ton of useful things for admins, e.g. the Logbuch tools. * [[http://www.sha-bang.de/index.php?page=12_eso|Argh!]] - an esoteric programming language. * [[http://www.methods.co.nz/asciidoc/|AsciiDoc]] - a lightweight markup formater for short documents, articles, books and UNIX man pages ## B <<Anchor(B)>> * [[http://furius.ca/beancount/|beancount]] - double-entry bookkeeping software using text files for input (based on [[http://ledger-cli.org/|ledger]]). * [[http://bitbucket.org/|Bitbucket]] Mercurial Hosting, written in [[http://djangoproject.com/|Django]]. ## C <<Anchor(C)>> * [[http://ozlabs.org/~rusty/ccontrol|Ccontrol]] - a utility for taming compiler versions, distcc, ccache etc. * [[http://cegui.org.uk/|CEGUI]] - a free library providing windowing and widgets for graphics APIs * [[http://www.cubicweb.org|CubicWeb]] - a semantic web application framework ([[http://www.logilab.org/cgi-bin/hgwebdir.cgi/cubicweb/|repository]]) == D/E/F/G == ## D <<Anchor(D)>> * [[http://www.dillo.org/|Dillo]] - a fast & light multi-platform browser ([[http://hg.dillo.org/dillo|repository]]) * [[http://www.dive4elements.org/|DIVE4elements]] - a database-supported web application for spatiotemporal analysis of data referring to the 4 elements (earth, water, air, and fire). DIVE is an acronym for Digging, Investigating, Viewing, Exporting. ([[https://wald.intevation.org/hg/dive4elements/|repositories]]) ## E <<Anchor(E)>> * [[http://hg.enanocms.org/|Enano CMS]] - Highly advanced hybrid wiki CMS system * [[http://enzo-project.org/|Enzo]] - Adaptive mesh refinement simulation code for astrophysics ## F <<Anchor(F)>> * [[http://flpsed.org/flpsed.html|flpsed]] - a Postscript and PDF annotator ## G <<Anchor(G)>> * [[http://ushare.geexbox.org/|GeeXboX uShare]] - A free UPnP A/V Media Server for Linux * [[http://flpsed.org/gipfel.html|gipfel]] - photogrammetry for mountain images * [[http://www.GraphicsMagick.org|GraphicsMagick]] - Portable image processing utilities, libraries, and GUIs. * [[http://globulation2.org/|Globulation 2]] - innovative state-of-the-art Real Time Strategy (RTS) game ([[https://bitbucket.org/giszmo/glob2|repository]]) * [[http://gquilt.sourceforge.net|gquilt]] - A GUI wrapper around quilt and Mercurials mq extension. * [[http://growl.info/|Growl]] - an open-source notifications system for Mac OS X * [[http://gwsmhg.sourceforge.net|gwsmhg]] - A PyGTK GUI for managing work spaces using hg and the mq extension. == H/I/J/K/L == ## H <<Anchor(H)>> * [[http://hatta-wiki.org|Hatta Wiki]] - A wiki engine using Mercurial for storage. * [[http://www.hedgewars.org/|Hedgewars]] - a turn based strategy, artillery, action and comedy game, featuring the antics of pink hedgehogs with attitude ([[http://hg.hedgewars.org/hedgewars|repository]]) * [[http://www.logilab.org/project/hgview|hgview]] - a mercurial interactive history viewer ([[http://hg.logilab.org/review/hgview|repository]]) ## I <<Anchor(I)>> * Intel's ACPI team is using Mercurial for Linux kernel development * [[http://icedtea.classpath.org|IcedTea]] - a harness to build the source code from http://openjdk.java.net using Free Software build tools * [[http://projects.malikania.fr/irccd|irccd]] - an IRC bot written in C++14 and Javascript ([[http://hg.malikania.fr/irccd|repository]]) * [[http://code.google.com/p/iui/|iUI]] - Javascript micro-framework for creating mobile !WebApps with a native iPhone/WebKit look & feel. ## J <<Anchor(J)>> * [[http://arrenbrecht.ch/jcite|JCite]] - cites Java, Excel and text snippets from tests into documentation (literate testing). ## K <<Anchor(K)>> ## L <<Anchor(L)>> * [[https://lemon.cs.elte.hu/|Lemon]] - Network and graph optimization library * [[http://lguest.ozlabs.org/|Lguest]] - The Simple x86 Hypervisor ([[http://lguest.ozlabs.org/patches/|repository]]) * [[http://www.libsdl.org|libSDL]] - The Simple !DirectMedia Layer library ([[http://hg.libsdl.org|repositories]]) * [[http://www.linux-ha.org/|Linux HA]] - The High-Availability Linux Project ([[http://hg.linux-ha.org/|repository]]) * [[http://www.linuxtv.org/hg/|LinuxTV]] - V4L (Video for Linux) and DVB (Digital Video Broadcasting) * [[http://hg.opensource.lshift.net/|Repositories of LShift]] - almost all LShift's projects, both open and closed source * [[http://www.wolfire.com/lugaru|Lugaru]] - a 3rd person multiplatform action game [[http://hg.icculus.org/icculus/lugaru|(repository)]] * [[http://luxrender.net/|LuxRender]] - GPL Physically based renderer == M/N == ## M <<Anchor(M)>> * [[http://www.mbdsys.com/repo/|Repositories of MBDSYS]] - various projects, e.g. the VOIP Toolkit [[http://www.mbdsys.com/opensource/verona/|verona]] * [[http://mcabber.com/|MCabber]] - small Jabber console client for Linux ([[http://mcabber.com/hg/|repository]]) * [[http://mooedit.sourceforge.net/index.html|medit]] - The medit text editor ([[https://medit@bitbucket.org/medit/medit|repository]]) * [[http://mercurialnet.codeplex.com|Mercurial.Net]] - A C#/.NET class library wrapper for the Mercurial command line client * [[http://hg.microformats.org/|microformats code/tests]] is a collection of repositories in use in the [[http://www.microformats.org/|microformats community]]. See [[http://microformats.org/discuss/mail/microformats-dev/2006-March/000070.html|using mercurial/hg to share microformats code, tests]] of 22 Mar 2006 * [[http://mlmmj.org/|Mlmmj]] - Mailing List Management Made Joyful ([[http://mlmmj.org/hg/mlmmj/|repository]]) * [[https://bitbucket.org/khinsen/mmtk|MMTK]] - the Molecular Modelling Toolkit, a library for molecular simulations * [[http://moinmo.in/|MoinMoin]] - a wiki engine implemented in Python - you use it right now :) ([[http://hg.moinmo.in/|repositories]]) * [[http://hg.intevation.org/moin/moin-was/|moin-was]] - authentication plugin for 52°North WAS as provided by Conterra SDI suite * [[https://code.google.com/p/monav/|MoNav]] is a Desktop / Mobile application that offers state-of-the-art fast and exact routing with !OpenStreetMap Data. * [[https://www.monetdb.org/|MonetDB]] is an open-source columnar database system for high-performance applications. ([[http://dev.monetdb.org/hg|repositories]]) * [[http://weblogs.mozillazine.org/preed/2007/04/version_control_system_shootou_1.html|Mozilla]], http://hg.mozilla.org ([[http://developer.mozilla.org/en/docs/Mercurial_FAQ|Mercurial FAQ]]) * [[http://www.mozdev.org|Mozdev]] - http://hg.mozdev.org ([[http://www.mozdev.org/drupal/wiki/MozdevMercurial|Mercurial Instructions]]) * [[http://control.ee.ethz.ch/~mpt/hg/|MPT]] - Matlab toolbox for multi-parametric optimization * [[http://dev.mutt.org/hg/mutt|mutt]] - The Mutt mail user agent ## N <<Anchor(N)>> * [[http://hg.netbeans.org/|NetBeans]] a Java IDE ([[http://wiki.netbeans.org/HgHowTos|Mercurial How-To]]) * [[http://hg.mperillo.ath.cx/nginx/mod_wsgi/|nginx/mod_wsgi]] a mod_wsgi module for nginx * [[https://redmine.malikania.fr/projects/nsnake?jump=welcome|nsnake]] a snake game for your terminal ([[http://hg.malikania.fr/nsnake|repository]]) * [[http://www.nsnam.org/|nsnam]] - ns-3 project, a discrete-event network simulator for Internet systems * [[http://www.ntfs-3g.org/|NTFS-3G]] - NTFS driver for Linux with read and write support (FUSE driver). * [[http://nginx.org/|nginx]] - nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev ([[http://hg.nginx.org/nginx.org/|repository]]) == O/P/Q == ## O <<Anchor(O)>> * [[http://objexx.com/ObjexxSISAME.html|ObjexxSISAME]] - 3-D structural impact modeling system * [[http://www.octave.org/hg/octave|Octave]] - GNU Octave is a high-level language, primarily intended for numerical computations * [[http://www.ogre3d.org/|OGRE]] - Open Source 3D Graphics Engine ([[https://bitbucket.org/sinbad/ogre|repository]]) * [[http://opag.ca/|OPAG website]] - The Ottawa Python Author's Group website * [[http://code.openbravo.com/erp/devel|Openbravo ERP]] - Web based ERP (Enterprise Resource Planning). * [[http://openjdk.java.net/|OpenJDK]] - better known as Java ([[http://hg.openjdk.java.net/jdk7/jdk7|repository]]) * [[http://opensolaris.org|OpenSolaris]] selected Mercurial as DSCM of choice for ON consolidation (and possibly other consolidations) ([[http://www.genunix.org/wiki/index.php/Mercurial|wiki]]) * [[http://hg.maintech.de|OpenTom]] a free development environment for !TomTom navigation systems ([[http://www.opentom.org|project wiki]]) * [[http://dev.openttdcoop.org/|#openttdcoop]] - multiple projects by members of the [[https://www.openttd.org/|OpenTTD]] community and others ([[https://hg.openttdcoop.org/|repositories]]) * [[https://bitbucket.org/opentyrian/opentyrian|OpenTyrian]] - a port of the DOS shoot-em-up Tyrian ## P <<Anchor(P)>> * [[http://code.google.com/p/pacha|Pacha]] - A systems configuration management tool. Keeps track of directories in an automated way with Mercurial in the backend. * [[https://sourceforge.net/p/passwdsafe/wiki/Home/|PasswdSafe]] - Password Safe port to Android. ([[http://roundup.hg.sourceforge.net/hgweb/passwdsafe/passwdsafe/|repository]]) * '''Paste Monkey''' - A Web 2.0 pastebin developed in CakePHP and jQuery with many advanced features and clean code base. * [[http://plan9.us|Plan 9 from User Space]]- A port of many Plan 9 programs to Unix-like operating systems. ([[http://code.swtch.com/plan9port|Hg repositories]]) * [[http://gsoc.cat-v.org/|Plan 9 from Bell Labs and Inferno Google Summer of Code projects]] ([[http://gsoc.cat-v.org/hg/|Hg repositories]]) * [[http://www.vergenet.net/linux/perdition/|Perdition]] - Mail Retrieval Proxy ([[http://hg.vergenet.net/perdition/perdition/|repository]]) * [[https://bitbucket.org/aafshar/pida-main/wiki/Home|Pida]] - a modular IDE written in python * [[https://pidgin.im/|Pidgin]] - a multi-protocol chat client that works on Windows, Linux, and other UNIX operating systems ([[https://hg.pidgin.im/pidgin/main/|main repository]]) * [[http://dev.pocoo.org/|Pocoo.org]] - Home of the Pygments syntax coloring library, Jinja template engine, Werkzeug WSGI toolkit, Zine blogging system and other Python web projects * [[https://prosody.im/|Prosody IM]] - a modern XMPP communication server written in Lua ([[https://hg.prosody.im/|repositories]]) * [[http://www.allbuttonspressed.com/projects/pymeta|PyMeta 2]] - Python implementation of [[http://tinlizzie.org/ometa/|OMeta 2]], a pattern matching (parsing) language based on a variant of PEGs * [[http://python.org/|Python]] - the Python language core repository [[http://mail.python.org/pipermail/python-dev/2011-March/108738.html|switched]] to Hg ([[http://hg.python.org/cpython/|repository]]) * [[http://pypy.org/|PyPy]] - A fast implementation of Python in Python ([[http://bitbucket.org/pypy/pypy|repository]]) ## Q <<Anchor(Q)>> * [[http://qtm.blogistan.co.uk/|QTM]] - Qt 4-based desktop blogging client (repositories at Bitbucket [[http://www.bitbucket.org/IndigoJo/|here]], see the 1.3 repo) * [[http://www.quakenet.org/development|QuakeNet IRC network]] - free IRC server and services == R/S/T == ## R <<Anchor(R)>> * [[http://raindoll.hg.sourceforge.net/hgweb/raindoll/|RainDoll]] - An encryption tool with a simple idea: keep it simple. No bells and whistles. Uses Rijndael from .NET. * [[http://roundup-tracker.org/|Roundup Issue Tracker]] - A simple-to-use and -install issue-tracking system with command-line, web and e-mail interfaces ([[http://roundup.hg.sourceforge.net/hgweb/roundup/roundup/|repository]]) * [[https://rhodecode.com/|RhodeCode]] - RhodeCode repository serving and browsing application written in pylons. ## S <<Anchor(S)>> * [[https://bitbucket.org/khinsen/scientificpython|ScientificPython]] - a collection of Python modules for scientific computing * [[http://scons.org/|SCons]] - a software construction tool that uses Python scripts as configuration files ([[https://bitbucket.org/scons/scons|repository]]) * [[http://www.riverbankcomputing.co.uk/software/sip/intro|sip]] - A C/C++ library bindings generator for Python v2 and v3 ([[http://www.riverbankcomputing.com/hg/sip|repository]]) * [[http://www.skoda.cz/en/|Škoda Electric]] - all electric power converter control projects * [[http://www.sudo.ws|sudo]] - a tool to run commands as a different user ([[http://www.sudo.ws/repos/sudo|repository]]) ## T <<Anchor(T)>> * [[http://hg.sv.gnu.org/hgweb/teseq/|Teseq]] - Escape sequence illuminator * [[http://foicica.com/textadept/|Textadept]] - a fast, minimalist, and remarkably extensible cross-platform text editor ([[http://foicica.com/hg/textadept|repository]]) * [[http://texstudio.sourceforge.net|TeXstudio]] - LaTeX editor * [[http://landley.net/code/tinycc/|tinycc]] - a Tiny C Compiler ([[http://landley.net/hg/tinycc|repository]]) * [[http://tortoisehg.bitbucket.org/|TortoiseHg]] - Mercurial GUI client on Windows ([[http://bitbucket.org/tortoisehg/|repository]]) * [[http://www.tryton.org|Tryton]] - A three-tier high-level general purpose application platform on top of which is built a business solution ([[http://hg.tryton.org/|repositories]]) == U/V/W/X/Y/Z == ## V <<Anchor(V)>> * [[https://redmine.malikania.fr/projects/vanilla|vanilla linux]] - A brand new Linux distribution ([[http://hg.malikania.fr/vanilla|repository]]) * [[http://viff.dk/|Virtual Ideal Functionality Framework]] - VIFF is a Python framework for secure multi-party computation ([[http://hg.viff.dk/viff/|repository]]). * [[http://bitbucket.org/marcinkuzminski/vcs|vcs]] - Various Version Control System management abstraction layer for Python. ## W <<Anchor(W)>> * [[https://bitbucket.org/grimmdp/winmerge|WinMerge 3]] WinMerge is an Open Source differencing and merging tool for Windows. * [[https://code.google.com/archive/p/wmii/|wmii]] window manager improved 2 * [[http://dvcs.w3.org/hg|W3C]] - The World Wide Web Consortium ## X <<Anchor(X)>> * [[http://x265.org/|x265]] - open source implementation of the [[http://x265.org/hevc.html|H.265/High Efficiency Video Coding (HEVC) compression standard]] ([[https://bitbucket.org/multicoreware/x265/|repository]]) * [[http://www.xemacs.org/|XEmacs]] - XEmacs: the next generation of Emacs ([[https://bitbucket.org/xemacs/xemacs|repository]], [[http://www.xemacs.org/Develop/hgaccess.html|XEmacs Mercurial page]]) * [[http://videlibri.sourceforge.net/xidel.html|Xidel Internet Tools]] - A XQuery and JSONiq interpreter; available as Pascal library, command line tool, and webservice * [[http://xinehq.de/|Xine]] - a free video player ([[http://hg.debian.org/hg/|repositories]]) == See also == * MercurialHosting - free hosting of Mercurial repositories * OtherTools - other tools (GUI, IDE etc.) that work with Mercurial * [[https://git.wiki.kernel.org/index.php/GitProjects|Projects using Git]] * [[http://wiki.bazaar.canonical.com/WhoUsesBzr|Projects using Bazaar]] * [[http://wiki.darcs.net/ProjectsUsingDarcs|Projects using Darcs]] * [[https://git.wiki.kernel.org/index.php/Projects_Migrating_from_or_to_Git#From_Mercurial|Projects that moved from Mercurial to Git]] ---- CategoryWeb |
Some Projects that Use Mercurial
The following lists some other projects that use Mercurial as their primary SCM system. Projects using a different SCM may have a synchronized Mercurial repository.
Contents
1. 0-9, A/B/C
1d6 roleplaying - free pen-and-paper roleplaying system (1w6.org) with Python implementation (rpg-1d6).
Abacus Formula Compiler - a spreadsheet (functional computation model) to Java byte code compiler for Excel and OOo Calc
Adium - an open-source multi-protocol instant-messenger client for Mac OS X
Adminton (アドミントン) contains a ton of useful things for admins, e.g. the Logbuch tools.
Argh! - an esoteric programming language.
AsciiDoc - a lightweight markup formater for short documents, articles, books and UNIX man pages
Ccontrol - a utility for taming compiler versions, distcc, ccache etc.
CEGUI - a free library providing windowing and widgets for graphics APIs
CubicWeb - a semantic web application framework (repository)
2. D/E/F/G
Dillo - a fast & light multi-platform browser (repository)
DIVE4elements - a database-supported web application for spatiotemporal analysis of data referring to the 4 elements (earth, water, air, and fire). DIVE is an acronym for Digging, Investigating, Viewing, Exporting. (repositories)
Enano CMS - Highly advanced hybrid wiki CMS system
Enzo - Adaptive mesh refinement simulation code for astrophysics
flpsed - a Postscript and PDF annotator
GeeXboX uShare - A free UPnP A/V Media Server for Linux
gipfel - photogrammetry for mountain images
GraphicsMagick - Portable image processing utilities, libraries, and GUIs.
Globulation 2 - innovative state-of-the-art Real Time Strategy (RTS) game (repository)
gquilt - A GUI wrapper around quilt and Mercurials mq extension.
Growl - an open-source notifications system for Mac OS X
gwsmhg - A PyGTK GUI for managing work spaces using hg and the mq extension.
3. H/I/J/K/L
Hatta Wiki - A wiki engine using Mercurial for storage.
Hedgewars - a turn based strategy, artillery, action and comedy game, featuring the antics of pink hedgehogs with attitude (repository)
hgview - a mercurial interactive history viewer (repository)
- Intel's ACPI team is using Mercurial for Linux kernel development
IcedTea - a harness to build the source code from http://openjdk.java.net using Free Software build tools
irccd - an IRC bot written in C++14 and Javascript (repository)
iUI - Javascript micro-framework for creating mobile WebApps with a native iPhone/WebKit look & feel.
JCite - cites Java, Excel and text snippets from tests into documentation (literate testing).
Lemon - Network and graph optimization library
Lguest - The Simple x86 Hypervisor (repository)
libSDL - The Simple DirectMedia Layer library (repositories)
Linux HA - The High-Availability Linux Project (repository)
LinuxTV - V4L (Video for Linux) and DVB (Digital Video Broadcasting)
Repositories of LShift - almost all LShift's projects, both open and closed source
Lugaru - a 3rd person multiplatform action game (repository)
LuxRender - GPL Physically based renderer
4. M/N
Repositories of MBDSYS - various projects, e.g. the VOIP Toolkit verona
MCabber - small Jabber console client for Linux (repository)
medit - The medit text editor (repository)
Mercurial.Net - A C#/.NET class library wrapper for the Mercurial command line client
microformats code/tests is a collection of repositories in use in the microformats community. See using mercurial/hg to share microformats code, tests of 22 Mar 2006
Mlmmj - Mailing List Management Made Joyful (repository)
MMTK - the Molecular Modelling Toolkit, a library for molecular simulations
MoinMoin - a wiki engine implemented in Python - you use it right now
(repositories)
moin-was - authentication plugin for 52°North WAS as provided by Conterra SDI suite
MoNav is a Desktop / Mobile application that offers state-of-the-art fast and exact routing with OpenStreetMap Data.
MonetDB is an open-source columnar database system for high-performance applications. (repositories)
MPT - Matlab toolbox for multi-parametric optimization
mutt - The Mutt mail user agent
NetBeans a Java IDE (Mercurial How-To)
nginx/mod_wsgi a mod_wsgi module for nginx
nsnake a snake game for your terminal (repository)
nsnam - ns-3 project, a discrete-event network simulator for Internet systems
NTFS-3G - NTFS driver for Linux with read and write support (FUSE driver).
nginx - nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev (repository)
5. O/P/Q
ObjexxSISAME - 3-D structural impact modeling system
Octave - GNU Octave is a high-level language, primarily intended for numerical computations
OGRE - Open Source 3D Graphics Engine (repository)
OPAG website - The Ottawa Python Author's Group website
Openbravo ERP - Web based ERP (Enterprise Resource Planning).
OpenJDK - better known as Java (repository)
OpenSolaris selected Mercurial as DSCM of choice for ON consolidation (and possibly other consolidations) (wiki)
OpenTom a free development environment for TomTom navigation systems (project wiki)
#openttdcoop - multiple projects by members of the OpenTTD community and others (repositories)
OpenTyrian - a port of the DOS shoot-em-up Tyrian
Pacha - A systems configuration management tool. Keeps track of directories in an automated way with Mercurial in the backend.
PasswdSafe - Password Safe port to Android. (repository)
Paste Monkey - A Web 2.0 pastebin developed in CakePHP and jQuery with many advanced features and clean code base.
Plan 9 from User Space- A port of many Plan 9 programs to Unix-like operating systems. (Hg repositories)
Plan 9 from Bell Labs and Inferno Google Summer of Code projects (Hg repositories)
Perdition - Mail Retrieval Proxy (repository)
Pida - a modular IDE written in python
Pidgin - a multi-protocol chat client that works on Windows, Linux, and other UNIX operating systems (main repository)
Pocoo.org - Home of the Pygments syntax coloring library, Jinja template engine, Werkzeug WSGI toolkit, Zine blogging system and other Python web projects
Prosody IM - a modern XMPP communication server written in Lua (repositories)
PyMeta 2 - Python implementation of OMeta 2, a pattern matching (parsing) language based on a variant of PEGs
Python - the Python language core repository switched to Hg (repository)
PyPy - A fast implementation of Python in Python (repository)
QTM - Qt 4-based desktop blogging client (repositories at Bitbucket here, see the 1.3 repo)
QuakeNet IRC network - free IRC server and services
6. R/S/T
RainDoll - An encryption tool with a simple idea: keep it simple. No bells and whistles. Uses Rijndael from .NET.
Roundup Issue Tracker - A simple-to-use and -install issue-tracking system with command-line, web and e-mail interfaces (repository)
RhodeCode - RhodeCode repository serving and browsing application written in pylons.
ScientificPython - a collection of Python modules for scientific computing
SCons - a software construction tool that uses Python scripts as configuration files (repository)
sip - A C/C++ library bindings generator for Python v2 and v3 (repository)
Škoda Electric - all electric power converter control projects
sudo - a tool to run commands as a different user (repository)
Teseq - Escape sequence illuminator
Textadept - a fast, minimalist, and remarkably extensible cross-platform text editor (repository)
TeXstudio - LaTeX editor
tinycc - a Tiny C Compiler (repository)
TortoiseHg - Mercurial GUI client on Windows (repository)
Tryton - A three-tier high-level general purpose application platform on top of which is built a business solution (repositories)
7. U/V/W/X/Y/Z
vanilla linux - A brand new Linux distribution (repository)
Virtual Ideal Functionality Framework - VIFF is a Python framework for secure multi-party computation (repository).
vcs - Various Version Control System management abstraction layer for Python.
WinMerge 3 WinMerge is an Open Source differencing and merging tool for Windows.
wmii window manager improved 2
W3C - The World Wide Web Consortium
x265 - open source implementation of the H.265/High Efficiency Video Coding (HEVC) compression standard (repository)
XEmacs - XEmacs: the next generation of Emacs (repository, XEmacs Mercurial page)
Xidel Internet Tools - A XQuery and JSONiq interpreter; available as Pascal library, command line tool, and webservice
Xine - a free video player (repositories)
8. See also
MercurialHosting - free hosting of Mercurial repositories
OtherTools - other tools (GUI, IDE etc.) that work with Mercurial