FSSB is a sandbox for your filesystem. With it, you can run any program and be assured that none of your files are modified in any way. However, the program will not know this - every change it attempts to make will be made safely in a sandbox while still allowing it to read existing files. This includes creating, modifying, renaming, and deleting files.Please note that FSSB is still in alpha. Check out the Contributing section if you'd like to contribute.