Circuit sketchpad
projectsQuantum Circuit DesignSmall Tools, Long Horizonsphysicscomputer sciencedesign
Summary
A single-file editor for drafting small circuits, built to stay readable and repairable by one person. No build step, no dependencies.
Scope
Under twelve qubits, no optimisation passes, no export formats beyond text. Everything it refuses to do is the reason it still works.
What I would change
The layout engine is the only part I regret. It solves a general problem I never actually had.