InvoiceForge — Self-Hosted Invoice Generator & Client Manager (Source Code)

InvoiceForge is a working invoicing app, not a template or a mockup: manage clients, build multi-line invoices with automatic tax and total calculation, track status from draft to sent to paid, and generate a clean print-ready invoice your client can pay from — all without a recurring bill.

What’s included:

– Client management (add, edit, delete)

– Multi-line invoice builder with live subtotal, tax, and total calculation

– Sequential invoice numbering (INV-0001, INV-0002…)

– Status workflow: draft, sent, paid — with an outstanding/paid dashboard

– A dedicated print-optimized invoice view for browser-native “Print to PDF”

– Full TypeScript source code: Next.js, Prisma ORM, Tailwind CSS

– Seeded demo data (3 clients, 4 invoices across every status) so it looks alive immediately

– A README covering setup, moving from SQLite to Postgres for production, and where to add a real PDF library if you want automated generation later

Most invoicing SaaS tools charge a recurring fee for exactly this core workflow — typically $5-15/month, and considerably more once you add clients or team seats. InvoiceForge gives you the same day-to-day toolkit as a one-time purchase you host yourself.

It’s built for freelancers, small agencies, and developers who want a real invoicing tool on their own infrastructure without adopting another monthly line item.

Note: this is a single-tenant build intended for one business per deployment. The included README documents all current limitations in full.

License: Regular License — for use on a single end product/project.