Payloads

This link will lead you to a page at NASA which depicts various payloads (near Earth satellites, planetary explorers, testbeds and more) from 1960 to what is projected out to 2025. Navigate by selecting a date along the left side, and cruise around the vehicle by selecting the views at the bottom. 

The only downside is a rather sparse amount of text on the vehicles (lower right). Otherwise, be prepared to spend some time seeing what we've sent out from the Earth!