/dictionary_and_thesaurus

Merriam Webster thesaurus and dictionary.
OneLook Dictionary and Thesaurus
Vocabulary
Words-to-Use contextual synonyms.
The Free Dictionary
Tip of My Tongue find the word you can't remember.
Rhymezone

/descriptions_and_experiences

Erowid trip reports
Drug Times drug info
Havocscope drug/blackmarket info and prices. IT FINALLY WORKS AGAIN!!!! (if it doesn't work, just try the wayback machine :3)
Diversity Style Guide
One Stop for Writers dictionary for emotions, themes, and so much more
Scarleteen sex education
Writing Realistic Injuries
Writing upper arm prosthetics good read through if you want to write a character with upper arm prosthetics
Writing With Color good blog with tons of stuff. i have some specific posts linked around
EADeverell creative writing blog
Challenging Fatphobic Language in Writing: Some Alternative Vocabularies
Springhole.net writing tips, roleplaying advice, random idea generators, etc etc
The Sifter food throughout the history of the world
Yardsticks book in the open library. about kids, so if you're writing a kid it might help
Resources for describing physical things
Why knocking someone out is cheap and some alternatives by howtofightwrite
Friends, Not Love Interests: How to Avoid Unintentional Subtext amanormativity is real like actually.
Words for Skin Tone | How to Describe Skin Color i legit use this all the time
little_details (forum) "Little Details is a community that helps writers with their research and fact-checking. All types of fiction writers (professional, amateur, fanfiction, original, dungeon masters) are welcome to post questions. Our focus is factual accuracy rather than general writing advice."
Internet Move Firearm Database Wikipedia but guns in media

/character-centric

How a Character’s Choice of Clothing Benefits the Story by its-a-writer-thing
Muslim Character Questions Round-Up! by WritingWithColor
Writing a Character with Magical Powers by ancwritingresources
Personality is the most important thing about your character. by thecharacterchick
Pilot callsigns fun names or nicknames for your characters that are vaguely insulting usually
Developing your Characters and Making Them Interesting by Reference For Writers

/learning

A Poetry Handbook by Mary Oliver (on Archive)
Modern Poetry open Yale course

/legible

Readable rates readability.
Hemingway Editor is another readability rater.

/assistance

LanguageTool this is like grammarly but free (no stupid account required)
PaperRater proof reader, grammar check, and plagiarism detection

/places_to_write

StimuWrite 2 writing app for neurodivergent people
The Official Written? Kitten! shows you a picture of a kitten when you hit your target words. if you add ?search=dinosaur to the URL, it shows dinosaurs instead. you can mess around with that to show different pictures.

/generators

DND Character Generator
Fantasy name generators NOT JUST FANTASY. TONS OF STUFF.
Seventh Sanctum character generator
Chaotic Shiny a bunch of generators. good for all sorts of things
big fat list of names oh yeah thats a big fat list of names
backstory description generator generic backstory to get the ideas rolling