An open-source application for the Subaru ECU; 1999 model and onwards. It provides many data logging parameters as well as being able to request user-defined parameters from the connected ECU. It also has ECUFlash integration which will allow you to download the current flash ROM image, compare a ROM image to what is currently loaded on the ECU and upload a new ROM image to the flash memory.
The source code has moved to GitHub. This code is no longer being actively developed and I am not aware of any third-party development. Use it as it is.