Axe is a recent hybrid language for ti83plus and ti84plus.
You can use an app to create programs composed by basic token with a different signification (axe interprets or compile your program).
A lot of people already use axe to do some very powerful projects.
This is a very interesting project.
You can find more information about Axe on this page :
http://www.omnimaga.org/index.php?topic=1665.msg24749#msg24749