Local / Regional Groups
- Code4LibNYC - NYC and surrounding areas
- New England Code4lib - New England
- Southeastern Code4lib - North Carolina, Virginia, Tennessee, etc.
- Code4Bib - Dutch Code4Bib
- Open Source Book Widgets - A collaboration of people interested in open source book widgets
- Open Source Discovery - Open Source application to enhance and support "discovery" in libraries
Software Usage and Documentation
- Umlaut - OpenURL link resolving middleware
- Patterns for Collaborative Code - Patterns to make your open source 'more open', more amenable to distributed development and use at multiple institutions without forking.
- ILS Documentation
- OSS Directory
- Getting Started with Zebra - indexing and searching MARC records
- Rogue - principles for standards creation
- BookRaffle - coordinate begging publishers for books to raffle off at the conference
- Get FOAFed - add your FOAF profile to the network of c4l2009 attendees
- RoommatesRidesEtc - Find roommates for Code4Lib 2009, share rides, etc.
- Conference Buzz - Conference announcements and a place for code4libbers to plan stuff
- SearchCampDC - barcamp style event in DC with usual suspects from code4lib
- Code4Lib Journal - information and working documents
Other Code4Lib Sites
AdminToDo - ideas and tasks for maintaining the Code4Lib sites