Source of MajorDomo software - Public Domain vs. Purchase?

[mark_wolf @ alliedtelesyn . com (Mark Wolf)]

     Greetings,
     
        Where does one go on the Internet to find the  MajorDomo public     
        domain software for SUN.
     
        There are also purchasable versions out there, advantages to
        purchase, e.g., latest version? support?
     
     Thanks in advance, Mark
     
        mark_wolf@alliedtelesyn.com or this list