There was a download of SafiServer 1.2 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free software was originally developed by Safi Systems LLC. The following versions: 1.5 and 1.1 are the most frequently downloaded ones by the program users. We recommend checking the downloaded files with any free antivirus. The software is included in Internet & Network Tools.
From the developer:
SafiServer is a standalone application server that supports a broad range of telephony applications and serves as the platform upon which everything from call routing to complex database driven IVRs can be built. SafiServer is built on enterprise level technology and has been designed from the ground-up with extensibility, scalability and reliability in mind.
You may want to check out more software, such as SafiWorkshop, which might be related to SafiServer.