I built Invox because every invoicing tool I tried was either bloated, expensive, or wanted to own my data.

It does what freelancers actually need: create invoices, send them via email, track when clients open them, set up recurring billing, and get automated payment reminders. No accounting features, no payment processor lock-in.

Tech stack: Next.js 16 (App Router), MUI 7, Prisma, PostgreSQL, Zod 4, React Query. Feature-Sliced Design architecture. TypeScript strict mode throughout.

Self-host with Docker in 3 commands:

git clone https://github.com/maksim-pokhiliy/invox.git cd invox docker compose up

Live demo: https://invox-green.vercel.app

MIT licensed. Looking for feedback on the UX and what features freelancers actually want next.