Sites like sqlitebrowser.org

The Trojan, a technical blog by Apoorv Tyagi on Java, Kubernetes, Kafka and production debugging

HamsterBase is a local-first, privacy-focused knowledge management tool for saving, annotating and note-taking with keyboard shortcuts and an API

A online guide to software-defined radio and digital signal processing using Python, with chapters on SDR hardware

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

A blog on technology, covering macOS tools, AI credits and transparency, and Home Assistant, by the author of Let's Talk About Tech!

Authlib, a Python library for OAuth and OpenID Connect clients, servers and protected APIs, maintained by Hsiaoming Yang and team

A Spanish-language online tool that generates fake DNI identity numbers and other dummy data for software testing

RaspAP is open source wireless router software for Debian-based devices such as the Raspberry Pi, with a product home page and kit

LIEF, a cross-platform C++, Python and Rust library for parsing, inspecting and modifying executable formats like ELF, PE and Mach-O

Dan Siegel's blog and portfolio on cross-platform .NET app architecture with .NET MAUI, Uno Platform and the Prism framework

A cross-platform C library and command-line tools for communicating with iOS devices, developed as free open-source software

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

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

Hovrly, a free Mac desktop app for time tracking aimed at distributed teams, by its small developer team

MatBlazor, a open-source library of Material Design UI components for the Blazor web framework, by SamProf

PyDev, an open source Eclipse plugin adding Python development support, created by Aleks Totic and maintained by Fabio Zadrozny

WinSCP, a free open-source SFTP and FTP client application for Windows file transfers between local and remote computers

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

Qiita, a Japanese knowledge-sharing platform where engineers publish technical articles and tutorials on programming and software development

Remmina, an open-source remote desktop client with a news blog and project pages by developer Allan Nordhøy

NuGet is the central package repository and package manager for .NET, with package search, download statistics and client tools

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

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

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

Mixxx, a free open-source DJ mixing software application, run by the Mixxx e.V. nonprofit association in Germany

Syncthing, an open-source continuous file synchronisation tool, with project donation and foundation information pages

The ice framework is an open-source PHP web framework delivered as a C extension, with documentation, changelog and license pages

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

Calibre, a free open-source e-book management software for converting, organising and syncing e-books across devices

Technical consulting, self-management coaching and a blog by Tom Sydney Kerckhove, founder of CS SYD, plus hosted Nix continuous integration

Monitor Tests, a site by ToastyX offering software for tweaking display resolutions and timings, with a community forum

Personal blog by Miguel Grinberg on Linux containers, Python performance, Forgejo and other software development topics

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

Cake, a C# build automation tool with its API reference, DSL aliases and documentation for .NET projects

VisiData is an open-source terminal tool for viewing, editing and analysing tabular data, with its documentation and quick reference guide

A weekly blog about iOS development and Swift programming by Sarun Wongpatcharapakorn, an iOS developer