- American Gelbvieh Association
 - Westminster - Includes resource library, photos, and more. - Animal Rescue and Adoption Society
- Denver - A no-kill shelter which provides assistance and shelter to abandoned and abused cats and kittens in Denver, CO.
- Boulder Community Net
- Boulder - Local and national information in order to promote civic participation, educational excellence, economic vitality, and community involvement.
- Citizens for Lakewood's Future
- Lakewood - Promotes a healthy community by encouraging citizens participation, increasing communication, and facilitating among diverse interests.
- Colorado Association of Nonprofit Organizations (CANPO)
- Denver - Serves a diverse group of members varying in scope from human services and health care to cultural and educational programmes.
- Colorado Horse Rescue
- Arvada
- Colorado Mortgage Lenders Association
- Englewood - Represents companies that participate in the mortgage lending industry within the State of Colorado. Includes consumer information and a directory of lenders.
- Colorado Water Congress
- Denver - Established in 1958 to protect, conserve, and develop Colorado's water resources.
- Community Resource Center
- Denver - Provides consulting, technical, and other services to community-based organisations in Colorado and across the country.
- Family Learning Center, The
- Boulder - Encouraging successful life-long learning and economic self-sufficiency for families of diverse cultures and limited incomes.
- Food Bank of the Rockies
- Denver - Collects and distributes food to nonprofit agencies which feed those in need in the Rocky Mountain region.
- Friends First
- Longmont - Organisation promoting sexual abstinence until marriage.
- Healthy Mountain Communities
- Carbondale - Examining quality-of-life issues in the Roaring Fork and Colorado River Valleys.
- Human Services Inc.
- Denver - Helping families become strong and self-sufficient through education, counselling, housing, and other supportive services.
- Keystone Center@
- Keystone
- Lambda Community Center
- Fort Collins - General info, resources available and more.
- Le Centre Du Silence
- Boulder - Devoted to teaching the dynamics of personal power and professional creativity, integrating thought with action by teaching the concepts of Theatre and Movement.
- Lions Club of Denver
- Denver - Supporting the Rocky Mountain Lions Eye Institute, Rude Park Day care, and more.
- Longmont Humane Society
- Longmont - Committed to preventing the suffering of and cruelty to animals, and striving to instill in the community an ethic of empathy, care, and appreciation for all living things.
- Loveland High Plains Arts Council
- Loveland
- National Farmers Union (USA)
- Aurora - Advocacy and general farm organisation that represents the concerns of family farmers and ranchers and the rural communities in which they live.
- National Institute of Standards and Technology - Boulder Laboratories
- Boulder
- National Onion Association
- Greeley - Provides information about onions to farmers, distributors, and consumers; recipes, trivia, and nutritional facts are all available.
- National Postal Mail Handlers Union Local 321
- Denver
- Neighborhood Resource Center of Colorado
- Denver - Strives to help residents and their associations build stronger, safer communities.
- Niwot Ridge Long Term Ecological Research
- Niwot - Conducting research on long-term ecological phenomena in an array of ecosystems within the United States.
- Northern Colorado Astronomical society
- Fort Collins - Astronomical and society current events, images taken by members, a deep sky journey of interesting objects, and the societies monthly newsletter.
- Random Acts of Kindness Foundation
- Denver - Privately held and funded foundation in the U.S. that inspires people to practice kindness and to pass it on to others. The Random Acts of Kindness Foundation provides free educational and community ideas, guidance, and other resources and is a member of the World Kindness Movement.
- Respite Care
- Fort Collins - Providing respite to families with disabled children in Larimer County.
- Rocky Mountain Skeptics
- Boulder - Nonprofit educational and investigative organisation founded in 1983 to promote critical thinking.
- Small Publishers Association of North America [SPAN]
- Buena Vista - Book-selling ideas and money-making strategies for independent presses and self-publishers.
- Solar Energy International
- Carbondale - Renewable energy education and sustainable development.
- Yampatika
- Steamboat Springs - Nonprofit organisation providing an understanding of natural and cultural resources of NW Colorado through education, communication, participation, and example.
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