Most large companies use custom billing systems so they can tailor it to their exact needs. If this is not an option, then stock solutions like ubersmith may be the only route to go.
PlatinumServerManagement (also known as PSM)
The OLDEST and LARGEST and MOST TRUSTED server management provider in the USA, with 15+ employees and growing! Providing quality support for OVER 18 years! Currently supporting over 3,000+ servers monthly! www.PlatinumServerManagement.com Proud member of the NJ BBB & Chamber of Commerce & Authorized cPanel Partner.
I would suggest to develop your own custom solution if you have the resources as it gives you the flexibility and the power,to easily and quickly adapt to the ever changing industry requirements. Its an investment in the beginning but would fetch you the rewards in the long run.
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