WindowTextExtractor can recover passwords stored behind asterisks (*****) from many of the windows apps. It allows you to get a text from any window of an operating system including modal dialogs, console windows, Windows desktop, Internet Explorer, Microsoft Office programs and any window with support of Microsoft UI Automation (UIA).
It is portable and only depends on .NET Framework 4.0
Source: https://github.com/AlexanderPro/WindowTextExtractor
Can you please add it to the PortableApps platform?