More tools could be available in the links from this thread: https://bitcointalk.org/index.php?topic=1996568.0

And just for your safely:
1. Make a copy of wallet.dat and keep it safe
2. Don't give your wallet.dat to others, try to find/fix by yourself
3. Do the operations on a throwaway operating system which you'll run offline (stay online until you set all, then go offline and wipe before going online again). This is because you have no guarantee that all the tools you'll try are clean and safe.