Well, you will see a lot of players in the market. All of them going for the Application Virtualization space. Network computing guys have done a review of Thinstall.
TVS lets you virtualize the entire application. A program's files, registry settings and virtualization layer are built into a single .EXE file. If the program has more than one .EXE to be started by the end user, a small, shortcut executable file can be created.
By virtualizing software packages, the apps become easier to deploy and manage. A wrapper around the application, files and registry settings isolates it from the OS and other apps. Any changes to the file or registry can be stored temporarily in a sandbox (a user-writeable directory where file and registry changes can be stored) instead of being written back to the actual OS. Because each virtualized app is isolated from the others, it can't cause conflicts. The benefit is reduced integration testing time needed by IT before deploying an app.
Unlike its competitors, such as Microsoft SoftGrid, TVS needs no client on the workstation running the virtualized app. Nor does TVS require the creation of additional infrastructure components. SoftGrid needs a server running Active Directory, IIS Web Server and a Microsoft SQL database to function. A client-based solution provides better control over such issues as license compliance, but can be harder to administer when home users and outside contractors need to use just an app or two. In such cases, Thinstall's approach has the advantage.
An example of of Security Appliance, check it out here.
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