Procatinator
Procatinator has been our category pick for most of the directory's existence. Justin Ouellette built it in 2010 as essentially one feature: a page that loops a randomly-selected cat GIF synced to a randomly-selected music track. That's it. Click "next cat" to get a new combination. The whole site fits in a single browser tab and serves a single emotional function: making you feel slightly better in 30-60 seconds. Ouellette has never substantially redesigned the site. The cat GIFs are mostly the same ones that have been there since 2012-2014. The music selection is curated but small. The site has somehow continued to work for over fifteen years because the formula is correct: GIF + music + no algorithm + no signup + no engagement metrics = a small reliable mood lift on demand. It is, in our editorial opinion, the canonical feel-good website on the internet. Worth visiting on a hard day.