Sites like kontextur.info

moderneREGIONAL is a German magazine with quarterly thematic issues on regional culture, architecture and heritage, plus daily news and an online shop

The Architecture Foundation, a London organisation running architecture tours, talks, city crits and audio programmes for the global architecture community

Simplecast is a podcast hosting, distribution, analytics and monetization platform with terms, data processing and careers pages

Saving Ukrainian Cultural Heritage Online, a volunteer initiative that web-archives and digitizes Ukraine's cultural heritage sites during the Russian invasion

Sketchfab, a platform where 3D creators host, share, embed and sell 3D models and AR experiences

A free, open-source Java UML diagramming tool that draws sequence and activity diagrams from plain text

The Pudding is a digital publication of visual essays that explain cultural debates through data and interactive graphics

SWI-Prolog is an open-source Prolog development environment and programming language distribution with documentation and downloads

A German-language podcast radio station from Leipzig producing journalistic podcasts, livestreams and music programmes, led by Christian Bollert

Free open source 2D CAD application LibreCAD for Windows, macOS and Linux, with community support and documentation

Verso Books, a London publisher of radical political and social non-fiction, with a blog and book club

A game development news blog by Mike Jennings covering engines, tools, free assets and tutorials

A German association's portal offering open educational resources, apps, tools and courses for teachers and pupils, run by ZUM e.V

ccMixter is a community website for sharing and remixing music licensed under Creative Commons licenses

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

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

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

The official website of Universidad de los Andes, a Colombian university, with news, events, research and fundraising campaigns

F-Droid is an app store and distribution platform for free and open source Android apps

Project Gutenberg, a free online library of about 80,000 public-domain eBooks run by volunteers, founded by Michael Hart

A collaborative online library of user-uploaded sound effects and field recordings under Creative Commons licences, with forums, charts and search

The LaTeX Project's website on LaTeX, the document preparation and typesetting system for technical and scientific publishing, with downloads, bug reporting, help and licence text

Godot Engine, a free open-source 2D and 3D game engine with a project blog and forum, with news by Thaddeus Crews and others

Nextcloud, an open source self-hosted platform for file sharing and online collaboration as a Microsoft 365 alternative

A podcast network of author interviews about academic books across arts, politics, religion and other scholarly fields, by New Books Network

GIMP, the free open-source cross-platform image editor project, with its official website, bug reports, documentation and news

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

A website builder for creating custom social networks and community sites, with community management and social media integration, offered in several languages

Typographica, an online magazine of type design reviews and typeface criticism, published by Stephen Coles

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

ArtsJournal, an aggregator of arts, culture and ideas news and commentary gathered from around the web

The official website of Thunderbird, a free open-source desktop and mobile email, calendar and contacts app

An English-language science communication site from McGill University, with articles, a weekly newsletter and public lectures by Dr. Joe Schwarcz