Many thanks to Mineo Wakita JE9PEL from whose website the information in this Word document has been extracted.
DK3WN Active satellites frequencies and status table http://www.dk3wn.info/p/?page_id=29535 (includes CubeSats)
Live OSCAR Satellite Status Page http://oscar.dcarr.org/
Live satellite cluster list http://www.dxsummit.fi/CustomFilter.aspx?customCount=50&customRange=507
Satellite Missions Database https://directory.eoportal.org/web/eoportal/satellite-missions
Recordings of the signals from Amateur Radio satellites can be found on the Sounds from Space website of Matthias Bopp DD1US. http://www.dd1us.de/historical%20sounds%20from%20space.html