Sites like limithron.com

Milby's Maps, a blog by Milby posting hand-drawn fantasy and real-world building floor plans and maps with commentary

KibblesTasty Homebrew: a blog of expanded D&D 5e classes, subclasses, and variant rules by its creator Kibbles

Fantasy battlemaps for tabletop roleplaying games and FoundryVTT by independent creator Racooze, sold as previews and downloads

Adventure writing and tabletop RPG content by narrative designer Konstantinos "Kelfecil" Christakis, including the Starlight Arcana setting and maps

Stephen Garrett's Wellington GM site offers tabletop RPG adventures, maps, and campaign tools for Game Masters, built on Foundry VTT

Liminal Horror, a rules-lite survival horror tabletop roleplaying game with its system reference, licenses, clue-writing guides and print catalogue

Yochai's blog on tabletop RPGs and fantasy and science fiction, plus Cairn Press games and the Between Two Cairns podcast

Foundry Virtual Tabletop, a self-hosted software platform for running online tabletop roleplaying games, with knowledge base and API documentation

Chibbin Grove is a shop and blog of fantasy and sci-fi battle maps and tabletop RPG assets, with free downloads and a dice roller

Angela Maps: free static and animated battle maps for D&D and other tabletop RPGs, by Angela

Legends of Athelu: a blog and module catalogue of gritty fantasy adventures for tabletop RPG games

TheRipper93 is a website by a developer making Foundry VTT modules for tabletop games, with module pages, maps and help

Community-built catalogues of fan-made content for indie tabletop RPGs, such as Death in Space and Frontier Scum

A blog on Pokémon fan design, tabletop roleplaying and gaming culture, with posts on playable Pokémon and player advice

A blog of Minecraft tutorials, mod fixes and indie game reviews, run by a single writer called WobbleRocket

Caesar Ink is a design and consultancy company offering game design, illustration, layout and business advice for ideas

Legacies of the Dragon is a site offering a 3.5E SRD game module for Foundry VTT, with adventure companions and a Patreon-linked add-on

Brave Alice Games, a UK company's site selling RPG Stories VTT software, tabletop RPG books, maps and 3D printing STL files

The Gauntlet is a publisher and podcast network of independent tabletop roleplaying games, with OSR-style fantasy modules, settings and video game-session roundups

A day at: a creator's shop of battlemaps, modular rooms and asset packs for post-apocalyptic and cyberpunk tabletop games

Worldbuilding blog by an individual creator covering tabletop RPG settings, alternate ecologies, reviews, optional rules and GM advice

Games Omnivorous, a tabletop roleplaying game studio run by its founder, making RPG rulebooks, settings and tabletop products

Sly Flourish, a blog and newsletter by Michael Shea offering tips on running tabletop roleplaying games

Happy Jacks RPG Network: a tabletop roleplaying game advice show, actual play podcast and video network since 2009

JB2A is a source of animated spell and effect assets for the FoundryVTT virtual tabletop, with a library viewer and downloads

Possum Creek Games, an online shop selling tabletop role-playing games, books and zines in print and PDF

Tom Cartos is a site selling and sharing TTRPG battlemaps, tokens, assets and adventures, with a shop for books and accessories

Arc Dream Publishing, a small publisher of tabletop role-playing games including Delta Green, The Black Company and Godlike

The Alexandrian, a blog by game designer and author Justin Alexander on tabletop RPGs, books, comics and films

Glumdark, a site of random RPG generators and tables for loot, NPCs, monsters and events for tabletop fantasy games

AbyssalBrews: a catalogue of weekly illustrated magic items and add-on systems for D&D and Pathfinder 2E tables by Fernando and Matthew

EN World is a community news, reviews and forum site covering Dungeons & Dragons and tabletop roleplaying games, with a shared wiki

Gnome Stew, an English-language gaming blog with tabletop roleplaying advice, reading lists and podcast episodes written by several contributors

A blog by Steph Campbell on tabletop role-playing games for children, with game reviews, lists, and games for parents and teachers

Prismatic Tsunami is a tabletop RPG podcast and blog by Erik "OrrynEmrys" covering film, games and actual play

Atlas Games, a tabletop game publisher whose site covers its card and board games, news, and fundraising events

Runehammer Games, a tabletop RPG publisher and play room run by Brandish Gilhelm, with fantasy and sci-fi adventures, dice and miniatures

Blades in the Dark, a tabletop role-playing game of criminal crews in an industrial-fantasy city, with its free rules reference

Paizo, publisher of the Pathfinder and Starfinder tabletop roleplaying games, card game organized play, and related fantasy and science-fantasy products

Jessica Marcrum's portfolio of tabletop RPG games, adventures and supplements, by an ENNIE-winning writer and designer

A online shop and resource hub for Blood on the Clocktower, the social deduction board game by The Pandemonium Institute

Loot The Room, a small independent studio's blog and shop for tabletop dungeon games, print zines and digital games

Michael Ghelfi Studios sells licensed tabletop RPG music and sound effects libraries, plus free game-master tools and a blog