My upcoming company, VerseHost.com, will be offering a service similar to LivePerson. Here is a list of current features:
- Live chat (1 second delay)
- Departments
- Unlimited operators
- Customized logo
etc.
Planned features:
- Logging
- Canned messages
- Visitor info
- and more..

It is still in development and should be a few weeks before it is finalized for use. This application is hosted on our servers, so it won't impact your server's performance. We plan on building in all of the features of LivePerson and OSICodes PHPlive in to this software.

We plan on selling this service for $10/month (unlimited operators, 100,000 live chat sessions per month limit) for WebHostingTalk members. Please post here or PM me if you're interested, so I can reserve this special pricing for you when the service comes out.