A source-available invoice, quote, project and time-tracking app built with Laravel

the fastest invoicing layer on the internet

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

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

A generic Java AS2 library, servlet and server

API REST open source NestJS para facturacion electronica Ecuador SRI. Facturas, NC, ND, Retenciones, Guias de Remision. Firma XAdES-BES, Multi-tenant, BullMQ, Docker.

A Node.js library for creating ZUGFeRD/Factur-X compliant documents. Generating XML and embedding it into PDF/A files, enabling seamless e-invoicing and digital document compliance.

Oxalis-NG (Oxalis - Next Generation) - Open-Source implementation of OpenPeppol AS4 profile

Advanced modules for the SILE typesetting system: A path for making books from front cover to back cover, invoices, and more, using lightweight markup.

A JavaScript library for creating and parsing electronic invoices compliant with the eInvoicing Directive, EN 16931, and popular extensions

ebInterface development repository for XSD and XSLT artifacts

Go KSeF 2.0 API Client library

Usefull classes for PEPPOL programming in NET Core.

A Library containing all UBL types for C#NET Core. See PEPPOL

SP01 Middleware (eSeal Solution) is the simplest way to connect your business to Egyptian Tax Authority (ETA)

A source-available invoice, quote, project and time-tracking app built with Laravel

A Typescript interface for interacting with Flick APIs - https://docs.flick.network

All Common C# NETCore Code used in EInvoicing Libraries

Flick's API SDK for Python - https://docs.flick.network

Compliance firewall infrastructure for German/EU e-invoicing (XRechnung, ZUGFeRD, Peppol BIS). Audit-proof validation with GoBD/GDPR compliance.