Not sure if this belongs here, but Flashpoint is a program that aims to preserve Flash games before they are taken down and forgotten. I think it's a pretty cool archive project, and the client is open source.
I found this collection of skiffle music, a genre that originated in black southern communities and spread across the Atlantic to the UK. Besides sounding really good, its a sadly forgotten part of music history, having influenced the later British Invasion in the 60s. Check it out!