FileMaker Key is software that can recover passwords for FileMaker databases (.fp3 - .fp8) instantly. It offers support for all versions up to FileMaker 8.5.

One of the most attractive features of FileMaker Key is the ability to generate a comprehensive list of all accounts and passwords set on your database. This includes the Master account, which is typically the most well-secured account in any database. You can access this information with a single click, which makes the process of recovering lost or forgotten passwords a breeze.
If you're unsure about whether or not FileMaker Key is the right software for your needs, the developers have provided a free demo version that you can download and try out. With this demo, you can generate a list of all accounts in your file and recover short passwords. This is an excellent way to test out the software and see whether or not it suits your needs before making a purchase.
Version 7.9: FileMaker 8 support