SciStarter: a catalogue of citizen science projects with an online-only filter
For anyone: the SciStarter platform gathers citizen science projects and helps find volunteer projects by keyword or topic (astronomy, biology, birds, climate, health, physics and more), near the user's location or online only. Participants help scientists collect data: they track pollinator populations, share observations while stargazing, document plant species, monitor air and water quality and track bird migration. A free account can be created to use the platform.
Volunteering Free Online