mendelson AS4 comparison

The mendelson AS4 software is available under different licenses - a commercial license and a community license. We offer a support package (SMP) for the commercial license.

This list contains a short overview on the features of these versions.

Community Edition

Commercial Edition

Commercial Edition + SMP

Price Free
Number of partnersUnlimitedUnlimitedUnlimited
Number of transactionsUnlimitedUnlimitedUnlimited


Push and pull messages✔️✔️✔️
Support for ENTSOG, ebMS, e-SENS, PEPPOL, BDEW and ICS2✔️✔️✔️
Partner management✔️✔️✔️
Digital signatures, encryption, UserNameToken✔️✔️✔️
TLS v1.2, v1.3 support✔️✔️✔️
Multilingual support: Localized to de and en✔️✔️✔️
Multiple identities/local stations (ASP capable)✔️✔️✔️
Email event notificationSome✔️✔️
Key and certificate management✔️✔️✔️
Key and certificate generation✔️✔️✔️
User defined HTTP headers✔️✔️
Run AS4 server as service (Windows)✔️✔️
Access via API (java lib)✔️✔️


ArchitectureDesktop applicationClient-Server applicationClient-Server application


Java API✔️✔️
OAUTH2 for HTTP/S and SMTP✔️✔️
HSM (Hardware Security Module)✔️✔️


Community Support Forums✔️✔️✔️
Detailed documentation✔️✔️
Access to mendelson Support💲✔️
Access to phone Support💲💲
Remote Support💲💲
Free updates✔️

License Type

Open Source License (GPL)✔️
Commercial License✔️✔️

Support & Maintenance Plan (SMP)

Buy our Support & Maintenance Plan (SMP) with our software products, which not only enables you to receive priority technical support, but also provides you with all major software upgrades and minor releases at no additional cost throughout the SMP period.

Service includes:

Priority Technical Support - Priority Technical Support provided via e-mail and Web-based support form. Our expert technical support team will respond within 1-2 business days during European business hours (M-F, 8am-5pm CET). German holidays excluded.

Free Minor & Major Releases - You will receive all minor and major software releases that are released during your support period. Updates that you receive cover the specific edition of the product that you have purchased and typically include many additional features.

Maintenance - During the support period you may also report any software problem or error to us using the same support process described above. If we determines that a reported reproducible material error in the software exists and significantly impairs the usability and utility of the software, we agrees to make reasonable efforts to provide a usable work-around solution or to correct the issue in an upcoming service pack or software release (made available at our sole discretion).

More info on SMP

The maintenance plan is only available for the commercial version of the mendelson AS4 software, and can only be purchased as part of a bundle with a current mendelson AS4 software product. If you license more than one product it is required that all have either a SMP or no SMP.

Please remember that we do not offer any support for the community editions of our software.

Desktop application vs Client-Server application

The community edition of the mendelson AS4 server has an included graphical user interface and could therefor not be started in a dedicated server environment (mainly linux without an installed X environment).

The commercial edition contains a server installation and a client (graphical user interface) installation with works cross platform. You could for example run the server on your linux server and attach several clients to it from any windows desktop with a single license and user management/login. To fit the productive requirements of your communication the commercial version of the server installation could be started as windows service.