Create single sign on for 3 different applications

Hello, We have 3 different applications: www.webhelpdesk.com. Can you suggest a better non hosted ITIL compliant helpdesk software for ticketing system) [login to view URL] (Project management. Already purchased and installed on server) [login to view URL] (Network monitoring software) What we need is: 1. The client enters his login details on the home page of website and is verified through Active directory. 2. Once he logs in he is taken to a landing page that will provide him the hyperlinks to access any of these applications. 3. When he clicks on any of those hyperlinks, the respective application opens up in a new window. 4. The most important thing is that the client should not be asked to re-enter his user name and password that he entered at the time of login. 5. This would probably need some integration to a single sign-on. Please refer to one such website for example: [login to view URL] Only serious bidders who have the acumen to do this. No time wasters or newbies. Please PM me with detailed project plan on how will you manage to achieve it.