COUG: Chicago Area Oracle User's Group
- A diverse group of people who share a common interest in the ORACLE Relational Database and related products. Events calendar, training, and contact details. Membership is restricted to residents of Illinois, Indiana, Wisconsin, and Michigan only.
- http://ioug.itconvergence.com/pls/htmldb/f?p=107:1%20

MAPICS User Group of Northern Illinois (MUGNI)
- A non-profit users group formed in 1982 to have an information exchange environment for users of the MAPICS XA software. Includes meeting locations and dates, presentations, how to join, and contacts.
- http://www.mugni.org

CPUG: Chicago Palm Users Group
- Provides social interaction, networking and resources for users of this personal digital assistant (PDA) in the Chicagoland area. Includes news, links, and meeting archives, along with upcoming events.
- http://www.chicagopalm.com/

CHIUG: Chicago Area Informix Users Group
- Helps gather and disseminate information about Informix products as well as other product offerings from IBM that can be integrated with the Informix line of products. Includes meeting calendar, resources, and presentation archive.
- http://www.chiug.org/

CSTUG: Chicago Smalltalk Users' Group
- Highlights the group's meeting times and locations, freeware and shareware for Smalltalk, vendors, its mailing list, and contact details.
- http://www.bobjectsinc.com/cstug/

CNUG: Chicago .NET Users Group
- Features support and networking from beginners to advanced developers of Microsoft .NET technology. Includes meeting location, training resources, events calendar, and contact details.
- http://www.cnug.org/

Chicago PHP Users Group
- Comprised of a wide variety of individuals, from beginners to experts, learning and helping each other manage their PHP projects. Code samples, meeting notes, events calendar, and contacts are provided.
- http://chiphpug.php.net/

CSTUG: ChicagoLand Sybase Tools User Group
- Features the group's contacts, meetings, events, news, and dues information.
- http://www.cpbug.com/

CSA: Chicago Software Association
- Offers members networking and professional development opportunities with peer-to-peer roundtables and CEO discussions.
- http://www.csa.org/

CCS: Chicago Computer Society
- A personal computer user group for the novice and information technology professional alike. Meeting and events calendar, members area, tips and tricks featured. Features 8 Chapters and about 20 Special Interest Groups (SIGs) that meet regularly throughou
- http://www.ccs.org/