Downloading TkCVS 7.2 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. This free Mac app was originally created by tk. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
TkCVS is a Tcl/Tk-based graphical interface to the CVS and Subversion configuration management systems. It will also help with RCS. The user interface is consistent across Unix/Linux, Windows, and MacOS X. TkDiff is included for browsing and merging your changes.