Download CommCheck 184.108.40.206 from our website for free. The most popular version of the tool 1.0. The actual developer of the free program is Lightship, Inc. CommCheck.exe is the default file name to indicate the CommCheck installer.
From the developer:
CommCheck is a quick FREE serial utility to determine which COMxx: ports are installed in a Windows system. The port's availability and status are displayed in a simple dialog. This is a great tool for tracking down applications locking COM ports.