Sites like hardill.me.uk

Node-RED, an open-source low-code tool for wiring event-driven applications and real-time data flows, with a blog and documentation

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

Blakadder's blog of smart home DIY guides and gadget reviews, covering Tasmota, Zigbee, ESPHome and Home Assistant hardware

JuanMTech is a blog of practical tutorials on Home Assistant, UniFi and self-hosting, by Juan

OctoPrint, an open source web interface for controlling and monitoring 3D printers, with a blog, help pages and merchandise by Gina Häußge

NotEnoughTech is a tech blog by Mat Zolnierczyk covering smart home gadgets, Raspberry Pi, Tasker automation and product reviews

A personal homepage by a.void.dog, featuring generative art, music picks and small projects, with a goth and science bent

libjpeg-turbo is an open source JPEG image codec project using SIMD instructions to speed up JPEG compression and decompression

OpenRGB is an open source, cross-platform program for controlling RGB lighting on many devices without manufacturer software

Personal website of Anthony Fu, a design engineer and open source developer, with notes, talks, demos and tool pages

François Best's digital garden: a freelance web developer's blog on JavaScript, React, Next.js and open source projects

BleachBit, an open-source disk cleaner and file shredder for Windows and Linux systems, with its help and documentation pages

A German and English tips blog on Linux, Docker, networking and hardware, with short how-to articles by its author

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

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

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

A security-focused, compartmentalizing desktop operating system based on Xen, with project news, hardware compatibility list and documentation

Alpine Linux, an independent lightweight Linux distribution built on musl libc and busybox, with its release announcements and documentation

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

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

Klipper documentation: an English-language reference site for Klipper, firmware that runs 3D printers, with configuration and developer guides

A crowd-sourced map of over 44,000 memorial benches, with photos and inscriptions, where users add new benches

A personal blog by Jeff Geerling on software development, Raspberry Pi and maker hardware, and open source tech news

Gio UI, an open-source library for building cross-platform immediate mode graphical user interfaces in the Go language

A free Winamp-style media player project, WACUP, with preview builds, a development blog and legacy plug-ins

Verdaccio, a lightweight private npm registry project with documentation, command-line reference, environment settings, testing guides and video talks

node-postgres is a collection of Node.js modules for connecting to and querying PostgreSQL databases, with API documentation and guides

Pleroma, a lightweight social networking server software project for the Fediverse, with a news page and blog

A personal site by Hari Rana (TheEvilSkeleton) with articles on making the Linux desktop more accessible, plus a Refine tool

Ctrl blog by Daniel Aleksandersen, an Oslo developer's blog of essays, tutorials and technical notes on Windows, Edge and security

Bridgy, a web service that copies social media reactions back onto your own website and cross-posts your site's posts to social networks

OrbitDB, a serverless peer-to-peer database project built on IPFS for syncing data between peers without central servers

Pi-hole, a network-wide ad-blocking DNS server software project with installation guides and donation pages

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

Gitea, a self-hosted Git and DevOps platform with code hosting, issue tracking and deployment tools, plus Gitea Cloud and Enterprise offerings

OPNsense, an open source firewall and routing platform project with release news, blog posts, donation information and a public roadmap