xnap-r3 2.5 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus.
The following version: 2.5 is the most frequently downloaded one by the program users. The most frequent installer filename for the application is: xnap-2.5r3-Mac-OS-X.tar.gz. This free Mac app was originally designed by XNap Team. The application relates to Education Tools.
From the developer:
XNap provides a plugin enabled framework for peer-to-peer (P2P) applications and a client which is based on that framework. It is free software and licensed under the GNU Public License .
XNap is purely written in Java. The client features a modern Swing based user interface and console support that will run nicely on every platform with a recent Java Runtime Environment
You may want to check out more software for Mac, such as Integrated Data Viewer Installer, UN-SCAN-IT Demo or ScienceMatrix, which might be similar to xnap-r3.