FingerPain
Typing analytics that never store what you type
Rust · Tokio · Axum 
SQLite FingerPain counts keystrokes without ever recording which keys — no keylogging, just counts and timing. You get words-per-minute and volume per app and per site, through a CLI, a local dashboard, or a menu-bar tray app.
It’s written in Rust with SQLite storage, and a companion browser extension adds per-site stats. Everything stays local.