Eero - WiFi router.
Hardware effects - Demonstration of various hardware effects.
LiteX - FPGA design/SoC builder that can be used to build cores, create SoCs and full FPGA designs.
Migen (Milkymist generator) - Python toolbox for building complex digital hardware.
Hackster - World's largest network for hardware & software developers.
nMigen - Refreshed Python toolbox for building complex digital hardware.
Glasgow Debug Tool - Tool for exploring digital interfaces.
Cerebras CS-1 - Built from the ground up to accelerate deep learning in the data center.
hackrf - Low cost software radio platform.
Meshtastic - Open source hiking, pilot, skiing, Signal-App-extending GPS mesh communicator.
Tindie - Buy and Sell DIY hardware products.
ZetZ - For code close to hardware, where C is and will remain the defacto standard system interface. You can also use it to build cross platform libraries, with a clean portable C-standard api.
Espressif Systems - Semiconductor company.