Apps similar to Shawl include SvcWatchDog, which is free and open source. Other options are NSSM - The Non-Sucking Service Manager, WinSW, EXE to Service and Always Up. In total there are nine apps like Shawl for Windows.
SvcWatchDog is a lightweight and configurable Windows utility that lets you run any non-interactive application as a Windows service—without modifying your code or relying on external wrappers. It’s designed for developers, sysadmins, and automation enthusiasts who need reliable...
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
EXE to Service is a utility that converts any executable (.exe) into a Windows service in just three clicks, enabling background operation and automatic, fault-tolerant execution. It features an intuitive GUI, JSON-based configuration management and custom action on crash.
Australia
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
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.
Application as Service is an advanced system tool which lets you run any application as Windows Service. You can easily configure Application as Service using its intuitive GUI interface or command line configurator directly from your software.
United States
Daemon Master is a software which makes it possible to create and manage a Windows-service from any program. (Alpha)
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