Srvany is a utility developed by Microsoft that can start almost any regular, non-service application as a Windows Service.
Since a Windows Service must be specially constructed to interface with the operating system (to allow Windows to start, stop or pause it on demand), a regular application without this interface will not function properly as a Service. To solve the problem, Microsoft developed Srvany - an "adapter" (or "wrapper") that can accept the Windows Service commands and translate those into actions that a regular executable can understand.
Like any good adapter, Srvany is installed in between Windows and the application and handles all interaction between them. For example, when Windows says "Start the service", Srvany intercepts the request and starts the application as if you had double-clicked on it yourself.
Srvany was developed in the late 1990's for Windows NT and remains mostly unchanged to this day. It is available as part of the Windows Server 2003 Resource Kit Tools package.
Ref: http://www.coretechnologies.com/WindowsServices/FAQ.html#WhatIsSrvany
