Built on the Yii 3 PHP framework. The Yii 3 sign shown above is Yii Software's own official mark, used unmodified under their CC BY-ND 3.0 license.

A self-hosted, open-source invoicing platform built in PHP on the Yii3 framework. It produces Peppol/UBL 2.4-compliant electronic invoices (including AS4 transmission), accepts online payment through 17 integrated payment gateways spanning Europe, North and South America, Asia, Africa and Oceania, and includes a HomeCare module for automating recurring service invoicing — cleaning-run scheduling, worker allocation, and an offline-capable PWA for field staff. Scheduled console commands handle automated backups and recurring billing.

⭐ View the source on GitHub — github.com/rossaddison/invoice Payment gateway coverage ➡️ Peppol Access Point status ➡️

Clicking through to GitHub records which country it came from (nothing more identifying than that) — it directly helps decide which payment gateways get prioritized next, since regions we see real interest from are the ones worth building for.

Open source under the BSD-3-Clause license.