The OnGeT Community runs on a software called b2een.
b2een is free of charge (no download or license fee), and runs on Windows, Mac OSX and Linux.
b2een is the easiest solution to set up secure business documents exchanges in a matter of minutes. With b2een, you can:
Establish relationships with business partners within open or private b2een Communities
Send and receive electronically signed and encrypted messages, with a guaranteed delivery
Benefit from Community related features - specific stylesheet to display business documents (for example, an xCBL Purchase Order or a PIDX Invoice displayed in a readable and printable format) or specific mappings to transform documents from one format to another...