Jailbreak allows a user to export certificates from Microsoft certificate stores even if the certificate has been marked as non-exportable; this can be useful if you need to make backups of the certificates or perform some other form of testing. The utility was first released in 2007, but at that time was closed source and OS version dependent, as it patched DLLs in memory. The new 4.0 release maintains all of the previous functionality but is now open source (under a BSD license) and uses a function hooking approach to remove OS version dependencies. There are pre-compiled binaries that should work on all versions of Windows from Windows XP up to Windows 8.1 on 32-bit and 64-bit systems.