Superpower Wiki
Superpowers, abilities, etc.
https://www.fantasynamegenerators.com/
Not just a generator for A to Z names from anything mythological to real historical names, location names from villages to galaxy systems.
Currency names, disease, bugs, faction names, evil factions names, etc.
There's also description generators; deities, races, dungeons, laws, books, etc..
tarot cards gens, blueprint maker, mapmaker, constellation maker, calender maker, timeline maker, dungeon maker, riddle generator, etc.
PLUS Gamemaster guides and writing guides. Oh and fantasy language making guides.
https://tvtropes.org/
Need inspiration on how to roleplay in a genre you're not familiar with? Want to try out a different character archtype? Want to make a demon but different? Did you recently fangirl over a show and want to create fanfiction or an original based by it and need inspiration on which elements to add?
gen - language text generator
Complex but fun fantasy language generator once you get the hang of it. I highlt recommend reading the help file first and experimenting with their default languages to have a better understanding.
Once you're done fiddling with the settings you can choose to generate text or give you a list of words. It's fun for making some fantasy greetings or curse words. :P
Or an entire language...
Seventh Sanctum: Setting Generators
More random generators.
donjon; RPG Tools
Tabletop inspired generators. Anything from maps, planets, galaxy, city demograpgics, npc generators, quest generators, calanders, etc.
20000-NAMES.COM: 20,000+ Names from Around the World--baby names, pet, pets, sim, story character, meaning, origin, etymology, etymologies, meanings, origins
Real and historical names from around the world with their meaning and origins.
Homepage - Dndspeak
More random generators. Mostly used for tabletop but works just as well for freeform writing.
Chaotic Shiny - Historical Event Generator
More random generators
Timeline Generator
A Timeline generator. Type in the name of the kingdom (or other), the amount of events you want to happen and how much time there is between them. And voila, history.
Fantasy Worldbuilding Questions - SFWA
Worldbuilding questions for you to consider when worldbuilding.
World Dream Bank: PLANETOCOPIA
A handful of planet maps including realistic alternative earts and future earths/mars/venus. The person expl;ains the science behind each map. I thought it was fun for those who want to make scifi worldbuilding.
Azgaar's Fantasy Map Generator
Mapmaking
I thought I had more maps, I was wrong. I know Inkarnate has a free version that is pretty decent.