List of Citizen Science Projects
= directory listing maintained by the Wikipedia
"Citizen science projects are activities sponsored by a wide variety of organizations so non-scientists can meaningfully contribute to scientific research. Activities vary widely from transcribing old ship logbooks to digitalize the data as part of the Old Weather project to observing and counting birds at home or in the field for eBird. Participation can be as simple as playing a computer game for a project called EyeWire that may help scientists learn more about retinal neurons. It can also be more in depth, such as when citizens collect water quality data over time to assess the health of local waters. An emerging branch of Citizen Science are Community Mapping projects that utilize smartphone and tablet technology. For example TurtleSAT is a community mapping project that is mapping freshwater turtle deaths throughout Australia.
Lists of citizen science projects may change. For example, the Old Weather project website indicates that as of January 10, 2015, 51% of the logs were completed. When that project reaches 100 percent, it will move to the completed list.
There are more than 1,100 active and searchable global citizen science projects listed on SciStarter." (https://en.wikipedia.org/wiki/List_of_citizen_science_projects)