WinTuner
WinTuner is an app that packages, and deploys third party apps to Intune. It's completely open-source so you could verify what is does and you can even improve it yourself.
WinTuner PowerShell
WinTuner is available as PowerShell module. This is a so-called binary module, meaning it is written in C# to make it as fast a possible.
WinTuner C# library
We are working hard to also provide you with a library, so you can easily start packaging apps right from your own C# application. This is not yet available to download, so you'll have to wait a little bit longer.
WinTuner CLI
As of version 1.1.0 WinTuner is no longer supported as a CLI tool, this is the last version. Please migrate to the PowerShell module.