Free As2 is an open source software which implement EDIINT AS2 protocol,it includes encryption, digital signature,compresison, sync and async(Partial support) MDN.
This software is 100% based on java technology, supprts Windows and Linux platform
Just extract to any directory to run, a sample configuration is also available. Refer to user manual under doc directory.
I created an SF account to give credit to the developer of this project. Very useful application, simple to install, easy to use, user friendly web-based UI. I asked for HTTPS support and 1 day later the developer release it in their next version update! Awesome! Thank you!