How to uninstall a Web Platform Installer (WPI) application?

I have looked all around the internet, and can't seem to figure out how to uninstall a WPI application. I accidentally installed something thinking it was something else, and now I can't uninstall it.

What does the Web Platform Installer do?

Web Platform Installer (Web PI) is a freeware, closed-source package management system that installs non-commercial development tools and their dependencies that are part of Microsoft Web Platform, including: Internet Information Services. WebMatrix.

What is WPI launcher?

The Microsoft Web Platform Installer - WebPI provides a simplified installation workflow for installing common open source web applications and web platform technologies.

You could remove them via control panel. Depending on what you want to remove, you either need to: Go into windows programs and features and turn windows features on/off, locate the feature you wish to remove and untick it. Else Go to uninstall a program section and locate it that way and uninstall as you would any other program.