Sites like ukskateforum.co.uk

Thrive, a free open-source evolution game and its weekly development news, by the Revolutionary Games Studio team

A GeekNights podcast and online community on tech hobbies, reviews, book club and lectures for hobbyists and tinkerers

A discussion forum for people following the ketogenic low-carbohydrate diet, with categories on food, fasting, exercise and science

Grid.Space is a web-based digital fabrication toolkit for CNC, laser, and 3D printing, built by Kiri:Moto

Quilt, an open-source Minecraft modding toolchain and mod loader project run by a community, with its documentation and downloads

Gladys Assistant: a self-hosted open-source home automation hub software project, with docs, a Plus remote-access subscription and development activity pages

TuxDigital is a media network with videos, podcasts, interviews and reviews focused on Linux, open source and technology

MetaBrainz Foundation, a non-profit publishing community-maintained open music metadata databases such as MusicBrainz, with API access and data dumps

Greenheart Games, an indie video game studio founded by two brothers, known for the Game Dev Tycoon business simulation game and its blog

PIXLS.US is a blog and tutorial site on free and open source photography software and workflows, run by Pat David and Rolf Steinort

Kodular, a visual drag-and-drop platform for building mobile apps without coding, derived from MIT App Inventor

MonoGame, an open-source cross-platform C# framework for game development, run by the non-profit MonoGame Foundation with its news blog

EndeavourOS, a terminal-centric Arch-based Linux distribution project with its own community, news and ISO releases

Drowned in Sound, an archived British music magazine and podcast recommending independent music, with reviews, news and year-end lists

Penny Arcade, a webcomic, news, video and editorial site on video games and nerd culture by Jerry Holkins and Mike Krahulik

The Crystal programming language project's website with language releases, API documentation, news and the core team

Roots, an open source org building WordPress development tools such as Bedrock, Sage, Acorn and Trellis, with a blog and docs

Flarum, an open-source forum software project for building community discussion sites with extensions and themes

Joplin, an open source note-taking app with multimedia notes, web clipping and end-to-end encrypted sync, developed by Laurent

An archive of historic text files, BBS documents and underground computer writing, maintained by Jason Scott

Manjaro, a Linux distribution built on Arch with rolling releases, with news and team pages by its core developers

Thread Reader App, a tool that unrolls Twitter threads into readable pages, with search, accounts and a premium tier

SuiteCRM, an open source customer relationship management software product for businesses, with downloadable demos and hosted instances

Syncthing, an open-source continuous file synchronisation tool, with project donation and foundation information pages

Pi-hole, a network-wide ad-blocking DNS server software project with installation guides and donation pages

MajorGeeks.com is a free software download site offering Windows utilities, drivers and tech news, run under the MajorGeeks name

Personal home page of Eric S. Raymond hosting his open-source software, FAQs, essays and the Retrocomputing Museum

The official website for Nix and NixOS, covering the reproducible, declarative package manager and Linux distribution, with manuals and learning resources

Podlove, a group of WordPress plugins for self-hosting podcasts, run by an open-source initiative led by Eric Teubert