Credits & open source

When our founder was first looking at invoicing tools back in the day, one of the projects that left a mark was SimpleInvoices — a long-running open-source invoicing project that proved you could build a focused, useful tool for freelancers without a huge team or a fat budget. Docz.me's current codebase is a fresh TypeScript rewrite and doesn't share code with SimpleInvoices, but the philosophy — small, focused, no-nonsense invoicing for the little guys — comes directly from projects like it.

If you're evaluating self-hosted open-source alternatives, we genuinely recommend looking at SimpleInvoices. It's a great tool for people who want full control of their data.

Today's Docz.me is written in TypeScript and runs on a stack of open-source projects. A non-exhaustive list of the giants we stand on:

• Next.js — the React framework that powers the web app, by Vercel.
• React — the UI library, by Meta.
• Prisma — the database toolkit and type-safe ORM.
• SQLite / libSQL — the embeddable database that keeps Docz.me portable and self-hostable.
• Tailwind CSS — the utility-first CSS framework.
• shadcn/ui — the accessible component primitives we build our UI on.
• Auth.js (NextAuth) — authentication for modern web apps.
• Zod — schema validation.
• argon2 — password hashing, courtesy of the Argon2 team and node-argon2 maintainers.

Docz.me sat in sleep mode from 2018 to 2025 because its founder didn't have the bandwidth to run it as a real product. The thing that changed in late 2025 was the new wave of AI coding assistants — specifically ChatGPT and Claude Code — which made it feasible for a solo developer to take on big refactors and ship fast without burning out. We're grateful for those tools too. This version of Docz.me wouldn't exist without them.

To everyone who has ever committed code, filed an issue, or helped someone in a forum thread — thank you. Docz.me exists because of you.

If you notice a project that we should be crediting but aren't, or if you'd like a correction, please email hello@docz.me and we'll fix it right away.