There's consistent demand to make Mudlet have the ability to take all settings and profiles with the application itself, ie when used on a USB stick.

Portable in this sense is defined as "A portable application (portable app), sometimes also called standalone, is a program designed to read and write its configuration settings into an accessible folder in the computer, usually the folder where the portable application can be found. This makes it easier to transfer the program with the user's preferences and data between different computers." https://en.wikipedia.org/wiki/Portable_application