Sites like lutz-electronics.ch

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

BUTT, a free multi-OS live audio streaming tool for Icecast, Shoutcast and WebRTC, by developer Daniel Nöthen

Amateur radio blog by Magnum Experimentum covering antenna experiments, engineering, equipment reviews and VHF operating, including 2m and AA battery tests

QSL.net is a free web and email hosting service for amateur radio operators, with DXpedition pages and mailing lists

MeshCore, an open source off-grid encrypted messaging system with MIT-licensed firmware, apps and solar-powered long-range radio repeaters

RigReference.com is a database of amateur radio equipment with reviews, manuals, prices, images, solar conditions and user-built shack pages

Personal amateur radio website of Peter Miles, VK6YSF, documenting his radio activities, equipment reviews and technical articles

LoRa APRS is a web toolkit and map showing data from LoRa APRS iGate and tracker stations, with an API and MQTT feed

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

Dr. Tamitha Skov's blog and weekly video forecasts on space weather, solar storms, aurora and geomagnetic activity

A German-language collection of open-source software services run by a private individual, ad-free and funded by donations

BeagleBoard.org is an open hardware single-board computer project offering documentation, forums, books and support for makers, educators and developers

CQRLOG, a free Linux ham radio logging program with MySQL database, radio control and DX cluster support, by developers Petr and Martin

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

The Rust Programming Language project's official site for the Rust systems programming language, with documentation, learning resources and community pages

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

A French telecom company's website for Free: internet and mobile plans, Freebox boxes, store locations, and subscription management

MajorGeeks.com is a free software download site offering Windows utilities, drivers and tech news, run under the MajorGeeks name

TWiT, an internet television network of tech podcasts and live shows founded in 2005 by Leo Laporte

It's FOSS is an English-language blog on Linux tips, tutorials, applications and news, written by Abhishek Prakash

Buttondown, a newsletter hosting platform for independent writers, with sample newsletters from creators such as Lex and Ben Norris