- AASL
- American Association of School Librarians
- ACRL
- Association of College and Research Libraries
- ALA
- American Library Association
- Arapahoe Library District
- Arapahoe Library District, Englewood, Colorado
- ASCC
- Automation System Colorado Consortium
- BCR
- Bibliographical Center for Research
- CAL
- Colorado Association of Libraries
- CALC
- Colorado Academic Library Consortium
- CASL
- Colorado Association of School Libraries
- CC
- Community College
- CCCONLINE
- Colorado Community Colleges Online
- CCHILL
- Colorado Consumer Health Information Librarians
- CCML
- Colorado Council of Medical Librarians
- CLiC
- Colorado Library Consortium
- CoALA
- Colorado Academic Library Association
- CoALL
- Colorado Association of Law Libraries
- Colorado College
- Colorado College, Colorado Springs, Colorado
- Colorado State Library
- Colorado State Library, Denver, Colorado
- CoPLA
- Colorado Public Library Association
- CSL
- Colorado State Library
- CYAAL
- Colorado Young Adult Advocates in Libraries
- DCL
- Douglas County Libraries
- Delta County Library District
- Serving the Colorado cities of Cedaredge, Crawford, Delta, Hotchkiss, and Paonia.
- Douglas County Libraries
- Serving the Colorado cities of Castle Rock, Franktown, Highlands Ranch, Littleton, Lone Tree, Louviers, and Parker.
- DPL
- Denver Public Library
- DPS
- Denver Public Schools
- DU
- University of Denver
- ET-IL
- Education Technology - Information Literacy
- Government Information in the 21st Century
- A continuing education program to train reference and public services librarians and library workers in the use of government information.
- ILL
- InterLibraryLoan
- Jefferson County Public Library
- Serving the Colorado cities of Arvada, Belmar, Columbine, Conifer, Edgewater, Evergreen, Golden, Lakewood, Standley Lake, and Wheat Ridge.
- MAPP
- Mountains & Plains Parapros provides educational and networking opportunities for library support staff through workshops, conferences, and a biannual newsletter.
- Marmot Library Network
- The Marmot Library Network provides an integrated library computer system service for a consortium of academic, public, and school libraries in Western Colorado.
- Metro State College & Auraria Library
- Metropolitan State College of Denver and the Auraria Library which serves the University of Colorado at Denver, Metropolitan State College and Community College of Denver.
- MLA
- Medical Library Association
- MSEC
- Mountain States Employers Council
- PCC
- Pueblo Community College
- Pueblo City/County Library District
- Pueblo City/County Library District, Pueblo, Colorado.
- Quipu Group
- Quipu Group is a company that provides technical consulting and development services for libraries.
- Rangeview Library District
- Serving the Colorado cities of Bennett, Brighton, Commerce City, Denver, Northglen and Thornton,
- RMSLA
- Rocky Mountain Chapter - Special Libraries Association
- SCIP
- Society of Competitive Intelligence Professionals
- SirsiDynix
- Sirsi/Dynix is a company that provides library automation software and services for libraries.
- SLA
- Special Libraries Association
- SRMA
- Society of Rocky Mountain Archivists
- TIE
- Technology in Education
- SRMA
- Society of Rocky Mountain Archivists
- UNC
- University of Northern Colorado