1)   Pre-Book PC Reservation Client (Windows) 1.0 An Open Source time limit management and PC reservation client that retrieves remaining time from a server based on the user's login information. A count down clock shows remaining time and logs the users out automatically once their time is up. 2)   Userful Pre-Book Windows Client 2 Userful Pre-Book allows library terminal reservations to be placed both from within the library and anywhere on the Internet. It works across all web browzer platforms.