Thanks to those who are going to portabilize this great piece of software!
Program: Anki Portable
License: Open Source/GPL
Description: "Anki is a spaced repetition flashcard program. The software is similar to SuperMemo, a commercial product for the same purpose, and Mnemosyne, another free flashcard program." [Wikipedia (https://en.wikipedia.org/wiki/Anki)]
Other: In March 2011, a development test was started by port_usb, but it was not completed (https://portableapps.com/node/27047). The possible creation of this thread was discussed in another thread (https://portableapps.com/node/37095).