Sites like cellstream.com

HackTricks is a multilingual wiki of hacking and pentesting techniques, cybersecurity notes and AI security tricks, maintained as an open-source book

OpenFaaS, a serverless functions platform for deploying event-driven functions on Kubernetes or at the edge, run by OpenFaaS Ltd

TecMint, a Linux how-to blog with tutorials and guides by Ravi, founded in 2012

The official website for the Go open-source programming language, with documentation, tutorials, and the Go Blog

Appium documentation: an open-source software project for UI automation of mobile, browser and desktop apps

Kismet, a wireless network detector and sniffer project with release posts, downloads and documentation by developer Mike Kershaw

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

MSYS2 is a software distribution and build platform for Windows providing Unix-like tools, compilers and package management documentation

Prettier, an opinionated code formatter for JavaScript, CSS, Markdown and other languages, with editor and CI integrations

Selenium, an open-source browser automation tool for web application testing, documented on its official project website

The Open Source Geospatial Foundation website, a nonprofit hub supporting geospatial open source software projects, their community, events and governance

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

NumPy project website: the official home of the open source Python library for numerical computing and N-dimensional arrays

Scikit-learn, an open-source Python library of machine learning tools for predictive data analysis, with documentation, FAQ and installation guides

A Python plotting library documentation site for Matplotlib, covering static, animated and interactive data visualizations

The GNOME project's website, presenting its free and independent desktop computing platform and its community, in English and several other languages

JSON Schema is a declarative language and documentation site for annotating and validating the structure and data types of JSON documents

A Spanish-language blog on ethical hacking, cybersecurity, and security tools, covering payloads, pentesting, and open-source offensive utilities

Vite, a frontend build tool and development server for modern web projects, documented by its core team

Bartosz Konieczny's blog on data engineering, Databricks, Apache Spark, Kafka, SQL and Java topics

Homebrew, a package manager for installing software on macOS, Linux and WSL from the command line

The official website of Vue.js, the open-source JavaScript framework for building web user interfaces, with its API reference and documentation

BrightDigit is a Swift app development studio, with articles, a podcast and Apple-platform products, founded in 2012 by Leo Dion

Packagist, the main public repository of PHP packages installable with the Composer dependency manager, with package search, API and feeds

Personal website of Sebastián Ramírez, a Colombian software developer, sharing ideas, guides and his open source projects like FastAPI

GB Studio is a drag-and-drop game creation tool for making Game Boy games, with visual scripting and no coding required

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

COIN-OR news blog on open-source operations research software, announcing the COIN-OR Cup awards and foundation board notices

A free open-source retro-gaming Linux distribution that turns a USB stick, SD card or computer into a gaming console

A collection of free image processing algorithms and documentation for the scikit-image toolbox in Python

Warzone 2100, a free open-source 3D real-time strategy video game with downloads for Windows, macOS and Linux

Xah Code, a personal website of programming tutorials, math notes, blogs and essays by Xah Lee

Jonathan Snook's personal site, a blog, journal and web design and code playground at Snook.ca

DB Browser for SQLite, an open source visual tool for creating, searching and editing SQLite and SQLCipher database files

PHPUnit project website by Sebastian Bergmann covering the PHP testing framework, its releases, documentation, sponsors and community events

A technical communication blog by Sarah Maria, covering writing, documentation, API docs, and AI book reviews

An open source PlayStation 2 emulator project, with a website carrying its blog posts and project information

TWiT, an internet television network of tech podcasts and live shows founded in 2005 by Leo Laporte

Thurrott.com is a technology news blog covering Apple, Microsoft, Google and consumer gadgets, with stories by staff writers including Laurent Giret