Holodeck B2B vs Peppox

Holodeck B2B is open-source software for business-to-business messaging, implementing the OASIS ebXML Messaging 3 and AS4 specifications. It can run as a standalone AS4 gateway or connect with a business system through provided interfaces. The software supports one-way and two-way exchanges using push and pull patterns, including files and attachments up to 2 GB. Gateway monitoring is available through command-line and graphical interfaces. A file-based backend is included; REST API integration is an extension, and the API can be used to build custom backends such as Web Services and JMS. An open-source AS2 extension lets a gateway exchange both AS2 and AS4 messages, with protocol selection in the P-Mode. Listed security features include signing and encryption with WS-Security 1.1.1, certificate trust stores, OCSP checks and AS4 non-repudiation of receipt. Version 7.0 is released under GNU GPL 3, and the software runs on Linux, macOS and Windows. The binary package does not include Java and requires JRE 11 or later.

Peppox is a cloud service for Peppol e-invoicing, with an API and dashboard for companies, developers and integrators. Its PDF2Peppol workflow extracts invoice information, turns it into a structured Peppol document and requests confirmation before sending. The API can build invoice data, add lines, generate UBL and follow delivery; Peppox also lists UBL and Peppol BIS validation, real-time tracking and webhooks for status updates. Customers can use its Managed Access Point or connect an existing one, including Ibanity, Wolters Kluwer Connect and CodaBox. Developer resources include a sandbox, PHP, Python and Node.js SDKs, and separate integration and production environments. The features page lists credential and certificate management, encrypted certificate storage, queued transmission, automatic retry and fallback, and 24/7 monitoring and alerting. The Company plan is €29/month for 1,000 sent and received invoices, then €0.89 per additional invoice. Integrator plans cost €59/month with your own Access Point or €89/month with Managed Access Point. Company registration and Managed Access Point service are listed in six European countries.