Sites like typelevel.org

Night street photography by Pierre Ricadat, a French photographer based in Seoul, shown in galleries and zines

A Scala.js UI library called Laminar for building reactive web interfaces, with documentation, blog posts and essays by its author

A web framework for building scalable web applications in Java and Scala, with documentation and source code on GitHub

Alvin Alexander's blog of programming tutorials on Scala, Java, Unix, MacOS, UML and CVS

Despair Labs, a personal blog by Rob Norris on computing, OpenZFS open source work, and conference presentations

OpenRPC, an open standard and toolkit for describing, testing, and documenting JSON-RPC APIs using a versioned spec document

The official home of the Haskell programming language, covering its compiler GHC, build tool Cabal, installer GHCup and community resources

A Swiss software company's site offering Java logging framework support, consulting and open-source project pages, run by QOS.CH Sarl in Vouvry

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

A C programming library for making videogames, with examples, games gallery and zlib-licensed source code

Lu Wilson's personal site (todepond) with talks, papers, performances, albums and experiments on live coding, tadi web and computer music

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

SDKMAN!, a command-line tool for installing and switching between multiple software development kits on Unix systems, with a catalogue of JDK distributions

The Rust Programming Language project's official site for the Rust systems programming language, with documentation, learning resources and community pages

A project website for PyPy, an alternative implementation of the Python programming language with a just-in-time compiler

Leanpub, a self-publishing platform where authors sell early-access and in-progress books, including technical titles on software and AI

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

A personal site by Matt Sh offering... no, forbidden. Here: A personal site of programming notes, including a decision-gating library and a tutorial on C const declarations, by Matt

springdoc-openapi documentation for generating OpenAPI 3 specs and Swagger UI in Spring Boot applications

AsyncAPI, an open source initiative and specification with tools for defining and documenting event-driven architectures, under the Linux Foundation

Koin, an open-source dependency injection framework for Kotlin and Kotlin Multiplatform, documented by Kotzilla and its contributors

Tiled, a free flexible level editor for designing 2D game maps, with its news and documentation pages

JUnit, a open-source testing framework for Java and the JVM, with documentation, release notes and project information

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

ESLint project website: documentation, playground and team pages for ESLint, the pluggable open-source JavaScript linter

Personal site of software engineer Artem Kettanaito with blog essays on JavaScript, open source, teaching and career

Amos Wenger's blog and video series on Rust programming, computer internals, and software engineering, written in English

Personal homepage of Nils Maier, a German developer publishing Firefox add-ons, tools such as UnRarIt and MinTrayR, and project pages

The Nim Programming Language site: documentation, downloads, FAQ, blog and donation pages for the statically typed, compiled systems language Nim

Neovim, a Vim-based open-source text editor project with extensible Lua plugins, documentation and developer resources

A tiling window manager for X11, written and configured in Haskell, with guides, release news and a blog

Typst, a markup-based typesetting system and online document creation tool for writing, automating and formatting reports and papers

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

Julio Merino's personal blog on software development, Unix tools, build systems and Rust, written by himself

libGDX is an open source cross-platform Java game development framework, with documentation, wiki, news and community game jams

Portfolio of Pierre Roy, a French full-stack and AI developer, with blog posts on Kotlin, Kore and Minecraft datapacks

The Zig programming language project's website, covering the general-purpose language, toolchain, documentation, and the Zig Software Foundation

Calva, a Visual Studio Code extension documentation site for Clojure and ClojureScript interactive programming with a REPL