Citizen Science Association - A new association dedicated to citizen science.
Cornell Citizen Science Toolkit - A clearinghouse for ideas, news, and resources in support of citizen science.
SciStarter.com - A network for citizen science projects and resources.
CAISE - The Center for the Advacement of Informal Science Education
School of Data - School of Data’s mission is to teach people how to gain powerful insights and create compelling stories using data.
Liquid - Mobile citizen science data collection tools and apps.
Project BudBurst - A national phenology and climate change field campaign for citizen scientists.
eBird - A real-time online checklist for birders and citizen scientists alike.
iNaturalist - A community for naturalists.
Project Noah - A tool to explore and document wildlife
Nature's Notebook - USA National Phenology Network (NPN)
Zooniverse - A suite of citizen science projects
Fieldscope - Supporting collaborative mapping for education and citizen science
Foldit - Solve puzzles for science