einvoice

🇪🇺 💶 Generate e-invoices (E-Rechnung in German) conforming to EN16931 (Factur-X/ZUGFeRD, UBL, CII, XRechnung aka X-Rechnung) from LibreOffice Calc/Excel data or JSON.

电子发票识别，可识别 电子普票 电子专票

Validates XML documents with XML Schema and Schematron

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 cal…

台灣電子發票統一 SDK：一套與供應商無關的介面，支援 Amego、ECPay 綠界、ezPay 藍新與財政部平台。Unified e-invoice (電子發票) SDK for Taiwan — one interface, multiple providers.

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

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

A PHP package for managing italian e-invoice and notice XML formats. (Pacchetto PHP per gestire il formato XML di fatture e notifiche come richiesto dal SdI).

Schematron rules for the German CIUS (XRechnung) of EN16931:2017 [MIRROR of GitLab]

XRechnung/ZUGFeRD/Peppol BIS Billing Implementation for Delphi and FreePascal

Security test suite for electronic invoices

A PHP package for connecting to Italian Exchange System (aka SdI) web services. (Pacchetto PHP per inviare fatture e notifiche ai webservices del SdI).

A PHP package for implementing web services required by the Italian Exchange System. (Pacchetto PHP per l'implementazione dei webservices TrasmissioneFatture e RicezioneFatture richiesti dal SdI).

FacturaE electronic invoice signing using pure C#

Xml formatındaki eFatura, eİrsaliye, eArşiv belgesini online görüntüleme

This project serves as a bridge between ERP and POS systems and the Egyptian Tax Authority's eInvoicing platform. It offers robust APIs for managing document lifecycle events, ensuring compliance, and enhancing operational efficiency for taxpayers.

MyInvois Middleware Gateway (API 1.0): token/session management, Retry-After handling, 10-min dedupe, submission polling worker, and finance-grade workflows (credit/debit notes, refunds, B2C consolidation).

Validator Configuration Peppol BIS Billing 3.0 [MIRROR OF GitLab]

Java library to easily read and write XSD compliant fatturaPA 1.2 and 1.2.1 invoices

KSeF SDK for TypeScript/Node.js — invoice reconciliation with bank statements (MT940, mBank, ING, PKO, Santander), production KSeF 2.0 HTTP client, MCP server for Claude and Cursor. Open-source, MIT.