Sites like pysdr.org

Personal technical blog by Anubhav Nain on search engines, fuzzy search, threading in Python, CPU features and machine learning

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

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

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

A video blog by Shahriar on electrical engineering and science, covering teardowns, repairs and experiments with test instruments and hardware

Osmocom, an umbrella project developing open source software and tools for mobile communications networks, run on a Redmine project site

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

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

A probability blog by Count Bayesie covering statistics, Bayesian reasoning, machine learning and AI writing experiments

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

Muhammad Raza's blog on DevOps, AWS and AI agents, written by a senior DevOps engineer and ex-AWS consultant

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

Stefanie Molin's blog and site on Python, data science and computer science, with her books, talks and workshops

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

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

A personal blog by Bart de Goede, an engineering manager in New York, on AI, engineering and text-to-speech

A catalogue of free downloadable programming reference books, such as C, R, CSS and Git, titled "Notes for Professionals

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

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

An interactive hands-on learning platform for Linux, Docker, Kubernetes and networking, run in the browser

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

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

The Tech Prepper is a video and gear site on off-grid communications, amateur radio, and field operations, run by its creator

NumFOCUS, a nonprofit charity supporting open source scientific software projects such as SciPy, pandas and Jupyter

A personal blog by Abhinav Omprakash on programming topics, including databases, compilers, Clojure macros, recursion, and backend engineering

Personal blog by Matthias Kestenholz, a Swiss developer writing about open-source maintenance, Django and drug policy in German and English

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

Personal homepage, blog and file archive of Linus Åkesson in Lund, Sweden, with SID music search and demoscene projects

A personal blog by Aki, a Vancouver staff software engineer, on machine learning, MLOps and human-in-the-loop AI systems

Org Mode for GNU Emacs: a plain-text major mode and project site for notes, to-do lists, planning and literate programming

Interactive explanatory essays on physics and engineering topics such as the Moon, GPS, gears and sound, by Bartosz Ciechanowski