Sites like zeptobars.com

Tasshin Fogleman's personal site: essays and notes on love, gift circles, meditation, and his Service Guild organization

Christine Lemmer-Webber's personal blog on free software, decentralized social web, and technology, with posts dating back to 2009

VCV Rack, a free Eurorack modular synthesizer simulator for Windows, Mac and Linux, with paid VCV add-on modules

Xe Iaso's personal website: blog essays, talks, and Twitch VOD archive on making technology understandable, by a technical educator

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

8bitworkshop is a browser-based IDE and learning site for writing retro 8-bit game code, with a project gallery

Personal web page of Justine Tunney, a software engineer writing on portable executables, llamafile, AI and programming tools

bleeptrack by Sabine Wieluch, a German artist's portfolio of generative art, games, vlogs and hardware projects

An anti-imperialist news site investigating Canadian foreign policy and the military-industrial complex, published as The Canada Files newsletter and blog

bunnie's burrow is a personal homepage and blog by bunnie, with an introduction and notes on her life and work

A blog by Gisselquist Technology's Dan Gisselquist on FPGA design, Verilog, formal verification and building the ZipCPU soft processor

XMission is a Utah internet service provider offering fiber internet, business connectivity, web hosting, SSL certificates and the XWi home WiFi service

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

Hackaday.io, a community platform where makers publish and share open hardware development projects and build logs

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

QRP Labs, a shop and news site selling amateur radio transceiver, beacon and enclosure kits, with build notes and tracking pages by its team

A news blog on embedded systems, maker boards and single-board computers such as Raspberry Pi and Arduino, run by CNX Software Limited

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

Tiled, a free flexible level editor for designing 2D game maps, with its news and documentation pages

A documentation site for pytest, the Python testing framework, with a list of talks, books and tutorials about it

John Van Sickle's site offers static Linux builds of FFmpeg, with FAQ and downloadable source archives

Blog by Will Green on FPGA hardware design, Verilog, RISC-V assembler, retro graphics demos and the Isle FPGA computer project

Slax, a compact portable Linux operating system that runs from USB, with a blog by its author Tomas M

OpenSCAD is free software for creating solid 3D CAD models by coding, with news and gallery pages

geekhack is a community forum for mechanical keyboard enthusiasts, covering group buys, interest checks, custom builds and marketplace sales

Viktor's personal blog on search engines, web tools, self-hosting and small-web projects, with posts in English

Low-tech Magazine: an English-language magazine on solar-powered, low-energy technology and sustainable living, with translated editions in German, French, Dutch and Turkish

The NetBSD Project's home site for its free, portable Unix-like operating system, with documentation, platform lists, news and downloads

A cyberdeck hobby site selling and documenting DIY portable hacker computers, with a build guide, FAQ and shop

LibrePCB, a free open-source electronic design automation suite for drawing schematics and designing printed circuit boards, with a blog and documentation

An English-language electronics tutorial and notes site by mbedded.ninja covering PCB bring-up, circuit design, embedded systems and firmware topics

A French-language project page for Armbian, an open-source Debian and Ubuntu Linux distribution for ARM single-board computers

A review blog by ThereminGoat covering mechanical keyboard switches, including Hall Effect and clicky switch reviews

Let's Build UI is a web development blog with practical frontend tutorials by Ryan Finni, a Chicago engineer

Dan Luu's personal blog of essays on software engineering, hiring, AI evaluation, and programming practice