Content guide:
🔞 Unfiltered adult content
⚠️ Adult content filtered by default
👁️ HTTP only access

Friends

https://rowedahelicon.com — Rowdy’s site!
https://seapunk.xyz — Iris’s site!

Entertainment

Video

https://nebula.tv — Subscription-based creator-run content platform. Topics include entertainment, news, politics, education. Lots of creators on YouTube post ad-free, early, and exclusive content here.

Music

https://everynoise.com — Neat graph of many musical genres, listing all the artists who fall under those genres and adjacent artists and adjacent genres. Has several other tools to navigate and categorise music, too.

https://www.vgmusic.com — Videogame MIDI music archive.

https://www.slsknet.org/news — Soulseek is a P2P file sharing network which is majorly used for music.

Art

https://derpibooru.org ⚠️ — MLP fandom art website running on Philomena, an open source imageboard software.
https://furbooru.org ⚠️ — Furry fandom art website running on Philomena as well.

Webcomics

https://www.runawaytothestars.com — Some queer happenings in space I guess.

Writing

https://www.fimfiction.net ⚠️ — MLP fanfiction. What more is there to say?
https://archiveofourown.org 🔞 — General fandom fanfiction.

Interactive

https://ncase.me/ballot/ — Interactive page explaining alternative voting systems! Site has other interactive stuff and a blog.

https://explorabl.es — A whole bunch of interactive pages explaining many concepts.

http://swfchan.net 🔞👁️ — An archive of old (and new) Flash animations, games, and whatever else people get up to with it.

Useful

https://wiki.archlinux.org/title/Main_page — The Arch wiki is primarily for Arch Linux users, but it contains plenty of useful information and configuration examples for various softwares.

https://regex101.com — Regex helper and explainer.
https://ihateregex.io — Deeper regex debugger.

https://marginalia-search.com — A search engine which prioritises “simple” sites, older sites.

https://www.productchart.com — An XY plot of product specifications such as monitor screen resolution, storage price per GB, laptop weight, and so on. Has sliders to filter results to narrow the selection.

http://rut.org/cgi-bin/j-e/jis/dict 👁️ — Searchable bidirectional Japanese⇔English dictionary.

https://www.overleaf.com/latex/templates — Handy place to find LaTeX templates.

Educational

https://www.khanacademy.org — Free learning resource for various topics including Math, English, Chemistry, and Computer Science.

Culture & Politics

https://www.lgbtmap.org/equality-maps — LGBTQ+ rights in a convenient map detailing legal protections and discriminations, listed by US state/territory.
https://www.aclu.org — The American Civil Liberties Union.
https://www.fsf.org — The Free Software Foundation. Promoting free software.
https://www.eff.org — The Electronic Frontier Foundation. Supporting digital rights.
https://www.repair.org — Right to Repair movement; the right to own your stuff.

Miscellaneous

https://www.mcmaster.com — I wish more websites were designed this way. Form serving function. No junk in the way; pure information.

💩posts

https://rms.sexy — Richard Stallman fansite.