We have recently launched a project for a powerful IR decoder & analyser GUI on Indiegogo.
If you are interested, please visit our project page on [Link: igg.me]
or via http://www.AnalysIR.com
Supporters are encouraged to suggest additional features for inclusion in initial release. For example, we recently added a feature to import Pronto codes, decode them, display the signals on the GUI and store them for later review.
Although initially based on Arduino, we hope to add support for Raspberry Pi and other MCUs as part of the project.
Screenshots, videos & manual are available on the project page.