I just shared a similar post to r/Metalcore about music-map.com, a service I've been using for years. It's a free website where you type in a band and it shows a "map" with a bunch of other bands listed. Closer the band, the more likely the two are similar. It's part of GNOD, a self-learning system that enables users to discover and discuss new music, books, products, art, and movies. I just realized... Source: almost 2 years ago

I have 827 (thank you librarything.com for the catalogue) and 7 dictionaries in four languages accumulated over 50-odd years. I have several matching sets I’ve bought as they were issued. You just have to (a) buy books and (b) live a long time. Source: 11 months ago

I use librarything.com to keep track of books I read. One of the things I like most about the site is that it basically works like your own personal library card catalog. You can create "collections" as well as tags to organize your books. You can easily add books by edition, format, or ISBN to your library. And if you have physical books, you can scan the barcodes to add them to your library instead of entering... Source: 12 months ago

Take a look at librarything.com, probably perfect for small libraries. Source: over 1 year ago

i'll also put in a plug for librarything.com. I prefer it way more than goodreads. It feels less more indie and far smaller. Source: over 1 year ago

I believe you can make comments vs. Private comments on librarything.com. You can also set your entire library to private. Source: over 1 year ago