Apps similar to Application as Service include NSSM - The Non-Sucking Service Manager, which is free and open source. Other options are WinSW, Always Up, Shawl and FireDaemon. In total there are seven apps like Application as Service for Windows.
nssm is a service helper which doesn't suck. srvany and other service helper programs suck because they don't handle failure of the application running as a service. If you use such a program you may see a service listed as started when in fact the application has died.
United Kingdom
winsw - A wrapper executable that can be used to host any executable as an Windows service, in a liberal license
AlwaysUp is the true set-it-and-forget-it way to run your mission-critical Windows application 24/7, unattended, starting it at boot and monitoring it to ensure that it is always running, even if it crashes, hangs, or fails.
United States
Shawl is a wrapper for running arbitrary programs as Windows services, written in Rust. It handles the Windows service API for you so that your program only needs to respond to ctrl-C/SIGINT. If you're creating a project that needs to run as a service, simply bundle Shawl...
United States
FireDaemon runs any application program executable or script as a Windows service when your computer starts up restarting it the application crashes or fails.
Australia
This tool requires that .NET Framework 2.0 be already installed on your computer. If you do not have .NET Framework 2.0 this tool will display a message and not run. You probably already have the .NET Framework 2.
Daemon Master is a software which makes it possible to create and manage a Windows-service from any program. (Alpha)
Japan
