Sites like phpfour.com

The Doctrine Project's home page for PHP libraries on database storage, object mapping, and an ORM and DBAL, with contributor guide

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

OddBird's website covers its open-source CSS tools, such as the Susy grid library, with sponsorship and development news from the studio

Gensim, an open-source Python library for topic modelling and semantic vector representation of text, by Radim Řehůřek

3v4l.org is an online PHP shell that runs submitted code across more than 500 PHP versions and shows the output of each

OpenNTF, an open source community site for IBM Domino and collaboration software, offering downloads, webinars, board elections and community news

Open source framework for managing Zsh shell configuration, with bundled plugins, themes and helper functions, maintained by a community

Yii PHP Framework's official website covering the open-source PHP framework, its team, logos, terms and community members

Personal site of Xeni Jardin, an internet writer, broadcast journalist and speaker formerly with Boing Boing

A blog on PHP, JavaScript and web development by software engineer Amit Merchant

Personal website of software engineer Colin O'Dell, covering his PHP and open-source work, conference talks, books, and projects

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

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

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

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

It's FOSS is an English-language blog on Linux tips, tutorials, applications and news, written by Abhishek Prakash

Kilian Valkhof's personal site on front-end development, UX design and his software projects, with talks and writing

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

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

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

Mongoose, an object modeling library for MongoDB in JavaScript, with documentation, changelog, news and plugin listings

A knowledge-center article collection on software engineering practice, covering delivery models, Git worktrees, product requirements documents, and argument fallacies

Andy Clarke's web design studio and blog in North Wales, with books, templates and t-shirts on web design

Symfony, a PHP web framework with documentation, components and tools for building scalable web applications

A web tool for creating and sharing text-based UML diagrams, with documentation, pricing and a changelog, run by yUML

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

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

Can I use..., a reference site of browser support tables for web features such as HTML5, CSS3 and JavaScript

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

UXmatters, a online magazine of user experience design articles and commentary founded by Pabini Gabriel-Petit in 2005

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

Parcel, a zero-configuration JavaScript build tool for the web, with release announcements and blog posts from its team

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

OMG! Ubuntu is a news blog covering Ubuntu and Linux apps, desktop software and open-source tips, written independently

Mocha, a JavaScript test framework for Node.js and browsers, with its project documentation and API reference

Blog by web standards leader Lea Verou on CSS, web design, icons and open source developer tools

BootstrapVue is a library of Bootstrap v4 components and grid styles for Vue.js v2, with documentation and an online playground

Ant Design, an open-source React UI component library and design system, with its release changelog and documentation