"F-Droid" matching MCP connectors:

MagicON RF Design EnginesA

io.github.magiccadai

RF module design for AI assistants: transmit chains, receivers, link budgets, PCB stackups, thermal and compliance, every figure computed by a solver from real catalog parts, never guessed. Free, no sign-in.

Commonlands Optics: M12 Lens and C-Mount Lens Finder + Field-of-View CalculatorA

com.commonlands

M12 lens and C-mount lens finder with image-sensor matching and field-of-view calculator.

PCB calculators: trace impedance, crosstalk, diff skew, crystal load cap, Vout tolerance, inrush.

Japanese catalog of physical devices AI agents can control: connectivity ratings, APIs, sources.

Motorola S-record count, input discarded