A set of C++ front-end for cvs distributed under GPL.
CvsGui features 

  WinCvs is written in C++ using the Microsoft MFC. 
  MacCvs is written in C++ using Metrowerks PowerPlant. 
  gCvs is written in C++ using GNU gtk+. 
  They are using the latest cvs source code. 
  They are making cvs easier for the novice. 
  They are increasing the power of cvs by providing an high-end interface. 
  The project is growing because it is supported and developed
    by several cvs users. 

WWW: http://cvsgui.sourceforge.net/