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Ericom's PowerTerm is the recommended text-based network access client for macOS. PowerTerm supports TN3270 emulation, SSH1, and SSH2. It supersedes the former supported product, dataComet-Secure, which is not compatible with macOS 10.15 Catalina or later.

PowerTerm has been configured to include profiles for many of the University's text-based servers with a separate installer. It contains the secure profiles necessary to connect to the University's mainframe applications (SRS, SFS, PR) on

Important note: BEN Application users should refer to the BEN Desktop Standards document for information about text-based network access clients that have been approved for use with BEN.


macOS compatibility

PowerTerm functions correctly in macOS 10.11 El Capitan and later.


Powerterm is site licensed at Penn and is available free of charge to members of the Penn community. Powerterm is available for download using your PennKey and password.


The .zip file contains two installers, "PowerTerm App installer" and "PowerTerm Session Installer". The first installs the application, and the second installer adds profiles for commonly-used hosts at the University such as SRS on Please run the Session Installer this installer after installing the App installer.

Known issues

For some system configurations, the PowerTerm Session installer may fail. In that event, you need to manually create a PowerTerm configuration folder, located at:


Once you create this folder, download the ptcomm file available here.  Unzip the ptcomm.ini file and put it in the newly created PowerTermConfigFolder directory. The sessions should be available the next time you run the PowerTerm application.