Download of jNetMap 0.5.4 for Mac was on 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 program lies within Internet & Network Tools, more precisely Network tools. The following version: 0.5 is the most frequently downloaded one by the program users. This free software for Mac OS X is an intellectual property of rakudave.
From the developer:
jNetMap helps you to keep an eye on you network. You can draw a graphical representation of your network, and jNetMap will periodically check if the devices are still up or a service is still running. You can also set up E-mail notifications or let jNetMap execute a script when a device goes down or comes up again.
Additionally, you may attach notes to a device, initiate an RDP/VNC/SSH connection to a device and much more.
You may want to check out more software for Mac, such as IPNetShareX, tn3270 or Remote Connections Manager, which might be similar to jNetMap.