Sites like pydev.org

Falcon, a minimal Python web framework for building fast REST APIs, documented on its project site

Brainwy Software issue tracker and funding portal for the open-source PyDev and LiClipse Eclipse-based Python IDEs

Kivy, an open-source Python framework for building cross-platform GUI apps, with a project blog, about page and documentation

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

Personal web site by Bruce Barnett collecting Unix and Linux tutorials, shell scripting guides and useful technical incantations

NativeScript, an open-source framework for building native iOS and Android apps with TypeScript, plus a showcase of community apps

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

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

Pocoo, a former team of open source developers behind Python projects Flask, Sphinx, Jinja, Werkzeug and Pygments

Defold, a free open-source 2D and 3D game engine with editor, scripting and cross-platform build tools, maintained by the Defold Foundation

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

SciPy, an open source Python library of algorithms for scientific computing, covering optimization, integration, interpolation, statistics and differential equations

A JavaScript toolkit, gulp.js, for automating build workflows with composable streaming tasks and plugins, documented through its project website

Hackaday.io, a community platform where makers publish and share open hardware development projects and build logs

Bugzilla project's website on the open-source bug-tracking software for planning and releasing software, with documentation, history and donation pages

A documentation site for pytest, the Python testing framework, with a list of talks, books and tutorials about it

The MacPorts Project's official site offering a package manager for installing open-source software on macOS and other Unix-like systems

The HDF Group, a non-profit company maintaining the HDF5 data format and library for scientific and engineering data management

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

PixiJS is an open-source HTML5 rendering library for interactive 2D graphics, games and cross-platform applications, maintained by a volunteer core team

Debbie O'Brien's personal site with blog posts, videos and podcast on Playwright, testing, AI agents and React development

Green Tea Press, publisher of free programming, data science and modeling textbooks by Allen B. Downey

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

Personal blog by Mike Driscoll sharing Python tutorials, code samples and files from his Python Extension Building Network projects

Ogre3D, an open source C++ 3D graphics rendering engine with news, community forums, a legacy wiki and support

Invent with Python is a programming learning site with free books, tutorials and a blog by Al Sweigart

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

A blog by Steve on MQTT messaging protocol and networking technologies, with tutorials for IoT engineers and hobbyists

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

The pages came through as binary garbage with no readable titles or headings, so the site's subject can't be determined from them. Going only by the domain, python.org is the official home of the Python programming language

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

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

Django Girls is a non-profit organization running free Python and Django programming workshops for women, with open online tutorials

Messense Lyu's blog on Rust and open-source projects, including jieba-rs, aliyundrive-webdav and Valgrind testing notes

Sam Who's personal blog of visual programming essays on topics like Big O, hashing and Bloom filters

CourtBouillon, a French cooperative's catalogue of open source document tools such as the pydyf PDF creator and CSS parser

LinuxFr.org is a French-language community news site and forum about Linux and free software, run by volunteer moderators

Stéphane Graber's blog on the Incus and LXC container projects, with release announcements and notes from Ubuntu and upstream work

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

ClassQuestion, a free web tool for teachers to run live class polls and send questions to students' own devices