Looks like it does the same stuff as BBSAK. It would be nice if there was something better than DM for syncing, because it requires too much button pressing/user verification almost every time.
mcp is a 100% gui for javaloader.exe (from rim's jde). i don't think there are any other tools out there that can do all of the javaloader commands. mcp also offers a single page to streamline bb os's (similar to crackmem, but with "real time" module selections). for everything else i just use dm.