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

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

Model classes for Italian Electronic Invoicing (Fatturazione Elettronica) with annotations to be transformed to XML format thanks to SimpleXML framework "http://simple.sourceforge.net/".

Mapping between ebInterface v4.x, v5.x and v6.x and the German XRechnung UBL

全电发票解析

Dự án hệ thống hóa đơn điện tử, liên kết với hệ thống thuế.

iDempiere 台灣統一發票與營業稅系統 — 符合台灣法規的統一發票管理與 401 申報｜Taiwan e-invoice & VAT system for iDempiere ERP

A Spring Boot web application that converts accounting invoice PDFs (primarily from FreeAgent) into Peppol BIS Billing 3.0 compliant UBL XML. It provides both a browser-based UI and a REST API, with optional OAuth2 integration for pulling invoices directly from FreeAgent.