- arbtt, an automatic time tracker.
- Blink SIP client for MacOS X
- C->Haskell, an interface generator for Haskell.
- cabal, a system for packaging Haskell libraries.
- Cedilla, a best-effort text printer.
- CL-ObjC, a bridge between Common Lisp and Objective C
- CL-Debian, Debian maintains most of the Common Lisp packages in Darcs.
- CL-Yacc, a LALR(1) parser generator for Common Lisp.
- Context Free, generate graphic designs from context free grammars.
- Darcs, David's Advanced Revision Control System.
- Darcheology, A Mac OS X Client and Explorer for Darcs.
- DDC, The Disciplined Disciple Compiler, a compiler for a Haskell dialect
- DrIFT, a type sensitive preprocessor for Haskell.
- Fenfire, a graph-based notetaking system built on Semantic Web technologies .
- fish, the friendly interactive shell.
- Functional MetaPost, a Haskell frontend to the MetaPost language.
- ghc, The Glasgow Haskell Compiler
- Grapefruit, a library for Functional Reactive Programming with a current focus on user interfaces
- Gtk2Hs, A GUI Library for Haskell based on Gtk+.
- Haskore, Composing music in Haskell.
- hledger, accounting tool.
- hscairo, Cairo bindings for Haskell.
- HSFFIG, Yet another Haskell FFI bindings generator.
- hs-plugins, dynamically loaded plugins for Haskell.
- The JanRain OpenID libraries, libraries for using the OpenID authentication protocol from several programming languages
- Lambdabot, IRC 'bot.
- MuPDF, a C-based PDF parsing library.
- PCRCommander is an application that allows you to control the popular XM radio PCR product and compatible devices.
- Postmaster, a message transfer agent (like postfix/sendmail/exim).
- Rubber, a wrapper for LaTeX and BibTeX.
- Scratchbox, a crosscompiling toolkit.
- Tahoe-LAFS, a secure, decentralized storage grid
- xmonad, a tiling window manager
- yi, A dynamic editor in Haskell.
- Zwiki, a Zope-based wiki engine.
- Jewelry Luv online jewelry store is using darcs internally for all projects.
- Summersault Website Development is using darcs all projects, from a busy national website to managing config files.
- Scanned In Avian is using darcs internally for all projects.
- JanRain, Inc. is using darcs internally and externally (http://www.openidenabled.com/resources/darcsweb)
- Weebly, Inc. is using darcs to manage its source repositories and push updates
- AG Projects have more than 20 repos managed with Darcs