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I restarted my mac and once I had the application running at port 1234, the status reported by nmap command (mentioned above) changed to ‘open’ and I was able to use my mac’s ip and port to access the application from another computer. You can also use Network Utility – Port Scan to scan for open ports on your mac. Open-Source Mac Apps. Feel free to contribute: issues or pull requests. ? Swift projects OS X Frameworks. Visit this supporting repository here: mac-frameworks OS X Apps. MacPorts: Easily install open source software on Mac with MacPorts May 21, 2007 - 10 Comments MacPorts, formerly DarwinPorts, is a free open source app that allows Mac users to easily install command line software and x11 software in Mac OS X by using the ‘ports’ command line tool for package management.