as4

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

Holodeck B2B is an AS4 system-to-system messaging solution that implements the OASIS specifications for ebMS3 and it's AS4 profile. For more information visit the project website

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

Open source scripts for analyzing and converting B&R AS4 projects to Automation Studio 6. Detects deprecated libraries, function blocks, unsupported hardware - includes helpers for migration.

A Rust workspace for end-to-end German energy market communication (BDEW MaKo / EDI@Energy) — from raw EDIFACT bytes to production microservices.

modbus client with LCD, 6x DS18B20, RS485, BMP180, ATmega328P, relays

📦 AS2 and AS4 B2B messaging for Rust — async-native, memory-safe, and fail-closed by default.

Build, parse and answer AS4 messages in Python, with the Peppol AS4 profile built in

Professional Open Source E-Invoicing System for PHP (Yii3) with UBL 2.4 and Peppol support

i2c scanner, Atmega328P, RS232

Spring Boot Starter for Oxalis — send and receive Peppol/EHF documents with auto-configuration, keystore setup, and SMP lookup. Works with Norway (EHF) out of the box.

GPS data from NEO6m on LCD 20x4

usefull tool

dmstool til integration med as4 gateway til dms hos skat.dk

Spring Boot application with Thymeleaf

Vendor-neutral Peppol SMP and AS4 interoperability preflight for local development and CI