The ExileStats API is available for public use and returns results in JSON format. If you would like to use my data in your projects please feel free!
I am planning to add more soon, if there is something specific you'd like please let me know.
These are just the ID numbers I use for ladders. Not exciting but important.
The currencies in my database along with their respective ID numbers and image files.
The currently voted ratios on ExileEX. It returns an exact ratio for every currency pair, formatted such that $currencies[x][y] = # of x per y.