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.

You Might Also Like

<span class="mrx-read-time-wrap mrx-read-time-before"><span class="mrx-read-time-badge">7 min read</span></span> Finbike Review 2026: Are These Budget Electric Bikes Worth It?

Finbike's electric bike range reviewed honestly — folding commuters through to long-range fat-tyre models, a strong 4.4/5 Trustpilot average, and the quality-control and safety concerns worth knowing before you buy.

View Details <span class="mrx-read-time-wrap mrx-read-time-before"><span class="mrx-read-time-badge">8 min read</span></span> Best ANC Wireless Earbuds Under £50 in 2026: 5 Real Noise-Cancelling Picks

Five wireless earbuds under £50 where active noise cancellation is the headline feature, not an afterthought — compared on ANC rating, codec support, and battery life.

View Details <span class="mrx-read-time-wrap mrx-read-time-before"><span class="mrx-read-time-badge">2 min read</span></span> Own Your Link-in-Bio Page — Meet LinkForge

A self-hosted link-in-bio page with per-link click analytics — the Linktree alternative you own outright. Full source code, one-time purchase — now available on Megastore76.

View Details <span class="mrx-read-time-wrap mrx-read-time-before"><span class="mrx-read-time-badge">3 min read</span></span> Print Once, Redirect Anywhere — Meet QRForge

A self-hosted dynamic QR code generator with scan analytics — edit where a printed code points, anytime, without reprinting. Full source code, one-time purchase — now available on Megastore76.

View Details