Sites like ruma.dev

Matrix.org, the home of an open, decentralised network for secure chat and communication, run by the Matrix project

Mark Smith's personal blog and digital garden on web development, automation, and programming, with notes and curated links

John Oestmann's digital music R+D blog, covering experimental sound tools, generative music experiments, sample packs and tracks, and workflow notes

Rocket.Chat, an open source team chat and collaboration platform for secure, self-hosted government and enterprise communications

Cinny, an open source Matrix chat client with an end-to-end encrypted messaging interface on the web and desktop

A documentation site for pre-commit, a framework for managing and running git pre-commit hook scripts before code review

A community wiki and guide to the IndieWeb movement, promoting personal websites owned and controlled by individuals rather than corporate platforms

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

Yeet, a network observability tool by Virt Inc. that lets coding agents read and act on live network traffic

A website devoted to Rust's turbofish syntax and the Reddit-coined term, run by developer Anna Harren

June Strawberry's personal homepage, hosting SSH and PGP public keys, file listings and contact details for a 21-year-old trans developer

Isaac Freund's blog of status updates and project notes on River, a Wayland tiling compositor, and related Zig tools

A personal homelab site offering free hosted open-source services such as Matrix and IRC bridges, run by an individual hobbyist called pixie

Conduit: a simple, fast chat server software project for hosting your own Matrix messaging server

Mysk Blog: independent cybersecurity and mobile app privacy research posts, including WebKit leak and macOS sandbox vulnerability disclosures, by Mysk

The gtk-rs project: safe Rust bindings and documentation for GNOME libraries such as GLib, Cairo and GTK 4

Paseo, a software product site for running and managing multiple AI coding agents across desktop, mobile, and remote machines, with a blog from its team

UnifiedPush is an open-source, decentralized push notification system letting app developers and users choose their own notification service

A blog-style benchmark site where AI models build 3D voxel scenes from text prompts, with a gallery, FAQ and voting by MineBench

A free, open-source webcomic by David Revoy, funded directly by its patrons, about a young witch and her cat

Rapier, a documentation and demo site for the Rust 2D and 3D physics engines developed by Dimforge

Sonic Pi, a free code-based music creation and performance tool for live coding, composition and learning, by Sam Aaron

Gadgetbridge, a free open source Android app for pairing and managing smart watches, bands and other wearable gadgets without vendor apps

The Argument is a Substack magazine on economics, policy and current affairs by Jerusalem Demsas

Magit, a text-based Git interface inside Emacs, with project news, documentation and blog posts by its maintainer

UBports, a community site on Ubuntu Touch, an open source Linux mobile operating system, with FAQ, apps and jobs

Personal blog by Rishikesh Sreehari, a niche-less web journal of ideas, life notes and Today I Learned entries

OpenRepos.net is a community repository of third-party applications for Linux mobile platforms such as Sailfish OS and Nemo Mobile

The official home of the Odin programming language, with documentation, news, showcase games and tools built in it

TeDomum, a French non-profit's online services page covering domain names, Pixelfed photo sharing, and Miniflux RSS feeds

David Revoy's blog on digital painting, comics and reviews of open-source art software, including Krita and GNU/Linux tools

Martin Kleppmann's personal website: blog, conference talks and publications on local-first software and distributed systems by a Cambridge academic

C++ Insights, a tool by Andreas Fertig that shows the source-to-source transformations the Clang compiler applies to C++ code

A German personal site by Andreas Itzchak Rehberg on Android books and coaching, plus Oracle database administration tips and services

Terence Eden's personal blog on standards, Linux, technology, Doctor Who and life, by Terence Eden

Nitter, a free alternative front-end for browsing X (formerly Twitter) without an account, run by its maintainer Wooji

Gajim, a free desktop chat app for the XMPP messaging protocol, with synchronized chats across devices

Branchable is a hosting service for Ikiwiki-powered websites, wikis and blogs built on Git

Dan Luu's personal blog of essays on software engineering, hiring, AI evaluation, and programming practice

Experimental History, a Substack newsletter on psychology and science by experimental psychologist Adam Mastroianni, published every other Tuesday

Personal blog by Rain, a software and systems engineer at Oxide, writing about Rust, type systems, and developer tools