I use up to three instant messaging tools on a daily basis and, in order to save some time when logging into my accounts, I prefer to select the "Remember Password" option. Of course, after a while, I forgot a password from one of the accounts; a program I used to solve this issue was Messenger Key.
Usually, when you forget a password, the best way to get it back is by sending a notification to the support page of the developer. By using this program, you skip this step, therefore, you save time and effort, and recover your password with one click.
Messenger Key doesn't work perfectly though, as it can recover passwords only if you checked the "Remember Password" box from the used instant messaging tool. So, it is only capable of recovering the passwords that you saved on your computer, a thing which you can do yourself if you know where to look.
In addition to this, its Help guide doesn't even relate to the application, but it offers you information regarding Passware Kit and various recovery modules.
Even though you don't have to pay to use Messenger Key, I guess you can find more efficient ways to recover your passwords, mostly because the results offered by this application aren't always accurate.