Alternatives to Pagero in 2026

Mustangproject ZUGFeRD

Open Source Java e-Invoicing library, validator and tool (Factur-X/ZUGFeRD, UNCEFACT/CII XRechnung)

Building block Production-ready A Java application must produce or check German or French e-invoices.

★ 483 Apache-2.0 XSLT Active, pushed 17 days ago

ZUGFeRD horstoeko

ZUGFeRD/XRechnung/Factur-X Library

Building block Production-ready You maintain a PHP app already using it; new projects should start with its successor, horstoeko/invoicesuite.

★ 437 MIT PHP Active, pushed 32 days ago

ZUGFeRD-csharp stephanstapel

Open source C# e-invoicing library. Enables creating and reading ZUGFeRD invoices.

Building block Production-ready Only for existing .NET projects that need a short bridge; new work should look elsewhere.

★ 395 Apache-2.0 C# Active, pushed 24 days ago

Phase4 phax

phase4 - AS4 client and server for integration into existing systems. Specific support for Peppol and CEF eDelivery built-in.

Building block Production-ready You are building a Peppol access point or another AS4 integration in Java.

★ 246 Apache-2.0 Java Active, pushed 3 days ago

Quba-viewer ZUGFeRD

Quba is a viewer for electronic invoices

Complete system Usable Someone in accounts receives XML e-invoices and needs to read and check them locally.

★ 206 Apache-2.0 Kotlin Active, pushed 10 days ago

Python-drafthorse pretix

Pure-python ZUGFeRD implementation

Building block Usable A Python application must emit ZUGFeRD invoices and the developer can work from the official specification.

★ 182 Apache-2.0 Python Active, pushed 5 days ago

ZATCA SallaApp

An unofficial package maintained by Salla to help developers to implement ZATCA (Fatoora) QR code easily which required for e-invoicing

Building block Usable A PHP system selling in Saudi Arabia must generate ZATCA-compliant invoices.

★ 168 MIT PHP Active, pushed 21 days ago

Factur-X atgp

PHP library to manage your Factur-X / ZUGFeRD 2.0 PDF invoices files

Building block Usable Your PHP system already produces PDF invoices and the XML, and needs to combine them into Factur-X files.

★ 154 MIT PHP Active, pushed 3 months ago

UBL Invoice num-num

A modern object-oriented PHP library to read and create valid UBL and Peppol BIS files

Building block Usable Your PHP app must send UBL invoices over Peppol, for example in Belgium.

★ 142 MIT PHP Active, pushed 13 days ago

Ph-ubl phax

Java library for reading and writing UBL 2.0, 2.1, 2.2, 2.3, 2.4 and 2.5 documents

Building block Production-ready A Java system handles UBL invoices, orders or other procurement documents.

★ 142 Apache-2.0 Java Active, pushed 7 days ago

XRechnung Visualization itplr-kosit

XSL transformators for web and pdf rendering of German CIUS XRechnung or EN16931-1:2017 [MIRROR OF GitLab]

Building block Production-ready Your software must show German e-invoices to people in the standard reference layout.

★ 134 Apache-2.0 XSLT Active, pushed 20 days ago

Validator-configuration-xrechnung itplr-kosit

Configuration for validating documents against the German XRechnung standard using the KoSIT validation tool

Building block Production-ready You build or test software that sends or receives German e-invoices and need the reference validation rules.

★ 119 Apache-2.0 XSLT Active, pushed 7 days ago

Eu_einvoice alyf-de

Create and import e-invoices with ERPNext.

Integration Usable A business in Germany or France runs ERPNext and must send or receive e-invoices.

★ 104 GPL-3.0 Python Active, pushed 3 days ago

ZUGFeRD PHP easybill

ZUGFeRD PHP SDK (Factur-X, XRechnung)

Building block Production-ready A PHP invoicing system needs to read or write ZUGFeRD XML and wants a library from an invoicing vendor.

★ 103 MIT PHP Active, pushed 12 days ago

Xrechnung-testsuite itplr-kosit

Test instances for the XRechnung Standard, the German Core Invoice Usage Specification of CEN EN16931 [MIRROR of GitLab]

Developer tool Production-ready You are building an XRechnung implementation and need reference test files.

★ 101 Apache-2.0 XSLT Active, pushed 2 months ago

Phive phax

Generic business document validation engine

Building block Production-ready You build Peppol or e-invoicing software in Java and need standard document validation.

★ 77 Apache-2.0 Java Active, pushed 5 days ago

Einvoicing josemmo

Library for reading and creating European-compliant electronic invoices (EN 16931)

Building block Usable A PHP application needs to produce Peppol or EN 16931 invoices without a commercial SDK.

★ 179 MIT PHP Quiet, pushed 17 months ago

OpenXRechnungToolbox jcthiele

Graphische Benutzeroberfläche für die Visualisierung und Validierung von XRechnung (und anderen EN16931-konformen E-Rechnungen) sowie ein Tool für die Berechnung und Prüfung von Leitweg-IDs. || Engl.: Graphical User Interface for visualization and validation of XRechnung (and other EN16931 compliant e-invoices) as well as tool for Leitweg-ID calculation and validation.

Complete system Usable A German organisation needs to view and validate XRechnung files locally without programming.

★ 64 GPL-3.0 XSLT Quiet, pushed 2 years ago

ZUGFeRD-Manager OpenIndex

A desktop application, that creates and validates ZUGFeRD invoices.

Complete system Usable A small German business wants to check or produce ZUGFeRD invoices without uploading them anywhere.

★ 39 Apache-2.0 Kotlin Quiet, pushed 17 months ago

Avalara E-Invoicing Avalara

Comply with international real-time reporting and e‑invoicing mandates. Automate financial operations with Avalara E‑Invoicing and Live Reporting.

Integration Production-ready A multinational must comply with e-invoicing mandates in several countries and already uses Avalara for tax.

Commercial