Phasor Professional
AM radio antenna design software started in college in 1998. Still used. Source is public now.
Related builds
shadow-garage
Software for silhouette plotters. Cut your own stickers. Opus 5.5, public repo.
PC-AXE
Hand-designed PCB, no AI. First-party hardware files on GitHub.
VIVE Face Tracking Bridge
Stream face and eye tracking from VIVE standalone headsets to VRCFT over Virtual Desktop and Steam Link.
S3 PX4 Flight Controller
Open-source FPV flight controller. ESP32-S3, EasyEDA project and gerbers. Designed with Codex and GPT-6 Astra.