Vibe Boost - An interactive digital museum of video-based art.
Y Combinator Companies - Interactive list of all 1000+ YC companies
Museum of Websites - Curated gallery of how internet companies changed over time
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.
Louvre Museum Online - Explore the entirety of the Louvre's collection for free
Startup School - How to start a startup, by Y Combinator