Enso Portable is a portable distrobution of the community version of Enso Launcher (of which is not developed anymore) which is a quasi-modal "humanized" app launcher for Windows.
Pro Extensible in Python
GChristensen recently upgraded Enso to Python 3.7, a great improvement over the original v2.5. You can write custom Enso commands in Python through its new web interface (or your favorite editor once you know where to put the files.) There's even an install command to pip install any Python package you need from PyPI. The sky's the limit.
Con No message log
According to Raskin's philosophy which inspired Enso, a pop up "dialog" is a bad design. The OK button is a useless input that interrupts your flow. Enso's pop up messages, therefore, are transparent and quickly fade away on their own (like Android Toast messages). Unfortunately, this also means you can easily miss them if you're not paying attention. Raskin's solution was to keep a message log you can refer back to, but Humanized never got around to implementing that for Enso.