Touhou Toolkit 12

This is a tool that will allow you to extract, modify, and repack game data.  Specifically, what this tool can get for you is:
> th*.dat files - Game Archives (Can Extract & Repack)
> .anm files - Image Archives and Animation Data (Can Extract, Convert to .png, Repack)
> .ecl files - Stage Scripts (Can Dump & Recompile) [These files are what contain the contain enemy layouts and danmaku patterns.]
> .msg files - Dialogue (Can Dump & Recompile)
> .std files - Background Scripts (Can Dump & Recreate)
 

We've included the latest version of the GUI, which is found in the Bin folder.  At the moment, the GUI supports all of the non-Retro bullet hell and photography games (no fighters); it's important to note that for games the GUI doesn't support, you can still run the appropriate command line executable to get your data the hard way.

Source:

https://github.com/thpatch/thtk