The 1.0 version of Simple Port Tester for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The program lies within Internet & Network Tools, more precisely Network tools.
The latest version of the program can be installed on Mac OS X 10.6 or later. Commonly, this application's installer has the following filename: Simple_Port_Tester_By_PcWi.pkg. This free software for Mac OS X was originally developed by PcWinTech. The most popular version of the tool is 1.0.
From the developer:
Simple Port Tester is a free program by PcWinTech.com to help users test if their ports are open with just a few clicks.
Tests both TCP & UDP ports.
The trick with testing if your port forwarding is working is to have something on your computer actually listening on the port. If nothing is listening on the port the test will fail no matter what.
You may want to check out more software for Mac, such as Quick Port Test, Port Forwarding Wizard or Simple, which might be related to Simple Port Tester.
Network Tools
Debugging Tools