Axway's Synchrony Gateway Interchange is a secure, reliable message gateway. It includes
an implementation of the latest ebXML messaging standard (2.0), with support for CPAs
(Collaboration-Protocol Profile and Agreement specifications). CPAs allow businesses maximum

CubeMS Provider Edition (CubeMS-PE) is a messaging server supports the OASIS ebXML messaging version 2.0 and OASIS ebXML
Collaboration Protocol Agreements version 2.0 specifications, W3C XML digital signature and W3C XML encryption specifications.

www.eLifeCoupler.com

eLife Coupler allows applications of two organizations to properly process the documents exchanged between them in ebXML. These documents may be purchase orders, invoices, customs declarations or insurance contracts, to name just a few examples. An example for a sector-specific standard ebXML format is papiNet® (see www.papiNET.org )

The Flame Message Server (FMS) is a multi-protocol secure business message server providing the middleware for communicating business messages over industry standard protocols conforming to the ebMS V3.0  and the ©RosettaNet RNIF V2.0 specifications. FMS provides the critical middleware in the implementation of Service Oriented Architectures (SOA) between heterogeneous business processes. 

INTERSTAGE is an infrastructure for Web services and a J2EE-compliant application server that provides organizations with the core components needed to deploy applications on the Web. It provides an infrastructure that delivers performance and scalability to enable enterprises to build and run mission-critical applications. The flexible INTERSTAGE Application Server supports multiple programming languages, open standards including SOAP, UDDI, WSDL, RosettaNet,  ebXML and other Web Services standards, and multiple platforms for diverse IT environments.

The HefeWeizen project is an ebXML messaging (ebMS) system. This system supports the OASIS ebXML messaging version 2.0 and OASIS ebXML Collaboration Protocol Agreements (CPA's) version 2.0 specifications. Its features include: (1) ebMS 2.0 support (Reliable messaging, XML digital signature, XML encryption, HTTP and HTTP(s) support -- server and client authentication, SMTP [in planning stage]; (2) ebCPPA 2.0 - Configuration of trading partners via ebXML CPAs.

Holodeck B2B is a stand alone messaging solution that implements ebXML Messaging version 3 and the AS4 profile.  

The  OASIS CAM specification provides an XML-scripting system for validating B2B transaction structures and content (http://www.oasis-open.org/committees/cam).

The jCAM open source implementation (http://www.jcam.org.uk) provides a Java-based component for use with your ebXML messaging systems.  The focus is on delivering a quick and easy way for your partners to ensure that their business transactions comform to the correct business rules needed.

English translation of JEITA announcement by Google Translate: