Open source invoicing projects
Every project in the registry tagged invoicing, ranked by real GitHub adoption.
Comprehensive open-source business management platform
Effortless time tracking for teams and projects
Modern desktop accounting made simple and free
Automate financial processes for smarter business decisions
Flexible billing infrastructure for modern SaaS
Self-hosted invoicing without the bloat.
All in One PSA for MSPs, which Unifies client, contact, vendor, asset, license, domain, ssl certificate, password, documentation, file, network and location man
Simple and elegant invoicing solution.
Invoicerr is a freelance-focused invoicing app that lets you create quotes, generate invoices, track payments, and collect secure signatures.
Related tags
Frequently asked questions
How many open source invoicing projects are there?
This registry tracks 9 projects tagged invoicing, with 26,452 GitHub stars between them. The most-adopted is Ever Gauzy at 7,470 stars.
Are these invoicing projects free to use?
Yes — 9 of the 9 carry an explicit open-source licence across 4 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which invoicing project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these invoicing projects still maintained?
9 of the 9 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.