Mailing the story:

Thin clients reduce hardware costs, offer added security by stripping away storage options, and ease management tasks by storing all configurations on a centralized server. Citrix provides a good solution and is a dominant player in this arena with Citrix Presentation server, but that comes at a price -- about $1,000 for five concurrent connections and about $200 to $300 for each additional concurrent client connection. However, taking the thin client route does not have to be that expensive: openThinClient is an open source thin client server that is absolutely free.