This is some work I'm doing whenever I have 5 minutes of free time. It will include all information needed to interface with the game, a basic internal framework with a menu, and tools to extract packet information at some point. Anything critical will have signatures included so you can update everything automatically. If you need something specific, open an issue on the repository.
https://github.com/Runescape-Reversed/OSRS-Steam
I may make an NXT repository for RS3 at some point too if there's any interest for this. I have the entire game reverse engineered at this point.