Establish a communication path between your computer and other hardware components connected to serial ports. Type the commands you want to send to the hardware device selected for monitoring and control. Exchange working and emergency data, check the logs, etc.
CoolTerm 2.1.1.3 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. CoolTerm for Mac lies within System Tools, more precisely Device Assistants.
This application's bundle is identified as org.the-meiers.coolterm. The latest version of CoolTerm can be downloaded for Mac OS X 10.4.0 or later. Cooltermmac.zip is the most common filename for this application's installer. This free software for Mac OS X was originally designed by Roger Meier. The most popular versions of CoolTerm for Mac are 1.4 and 1.3.
From the developer:
CoolTerm is a simple serial port terminal application (no terminal emulation) that is geared towards hobbyists and professionals with a need to exchange data with hardware connected to serial ports such as servo controllers, robotic kits, GPS receivers, microcontrollers, etc. Written in Xojo.
You may want to check out more Mac applications, such as 4Media iPod to Mac Transfer, GroupWise or Display Maestro, which might be related to CoolTerm.