I might interest you in the museum of endangered sounds… http://savethesounds.info/. - Source: Hacker News / 16 days ago

So many old electronic noises, luckily there's the Museum of Endangered Sounds at http://savethesounds.info/ for when I feel nostalgic. Source: over 1 year ago

Http://savethesounds.info/ - listen to a museum of endangered sounds. Source: about 2 years ago

For your pleasure: http://savethesounds.info/. Source: over 3 years ago

I heard that sound again this week on Brendan Chillcut's simple and wondrous site: The Museum of Endangered Sounds. It takes technological objects and lets you relive the noises they made: Tetris, the Windows 95 startup chime, that Nokia ringtone, television static. The site archives not just the intentional sounds -- ringtones, etc -- but the incidental ones, like the mechanical noise a VHS tape made when it... Source: over 3 years ago

Oh I found it. It's learn-anything.xyz. Source: over 1 year ago

I think I found something that looks and works like what you described: https://learn-anything.xyz/. If it's not that one then I'd also like to know what it is because it sounds really useful haha. Source: over 1 year ago

This one is my favourite, its not great for everything but most of the time it provides a solid road map to learning something new. https://learn-anything.xyz/. - Source: Hacker News / over 1 year ago

Learn Anything : Community curated knowledge graph of best paths for learning anything. - Source: dev.to / over 1 year ago

You may be thinking of https://learn-anything.xyz/. - Source: Hacker News / over 1 year ago