Eureka Encryption Messenger 4 4.0.0
Eureka Messenger 4 software delivers secure and private messaging and unlimited file transfers over the internet.
This application no longer requires the VB Runtimes, but this new version 4 is not compatible with the previous windows version.
Actually there is no install for this application. You can run it right where you unzipped it, or copy the files unzipped wherever you want them.
If there is a firewall on either machine, some configuration may be required in order to make a connection.
The program has a Help file to guide you on how it works, although it is simple enough to run without much assistance.
You probably need to issue a chmod +x messenger before it can run. On some linux systems you may also need to issue a chmod +755 messenger.