Have you ever forgotten the password of a protected RAR file that you downloaded from Internet? If your answer is yes, then don't worry because RAR Password Unlocker will find it out for you.
The program has three recovery options; the dictionary attack, the absolute brute force attack which will test every possible word combination, and the mask attack which is the same as brute force, but will save a lot of time by allowing you to specify a known part of the password or some symbols that should compose it.
The auto-save option enables you to automatically save the progress of the cracking process every certain number of minutes, so you can resume it whenever it's interrupted without having to start from the beginning again.
Once the program has found your lost password, you can choose to remove it from the file and remove the write protection password as well.
The speed of the cracking process will depend on the priority level that you have chosen for the program, idle or high, and also on your computer's hardware.
Pros
Cons
Acrobat Distiller 
Adobe Photoshop 
CardScan 
Selfish Net 
iVMS 4200 
uPLAY by Ubisoft 
Hard Time
Wiki Where is the log file saved that keeps record of recovered passwords?
Michael Miralles Does RAR Unlocker unlock .zip files too?
Guest Works. Takes some time but the best and most reliable one I have come across so far. Slows down your computer a bit, but that's normal.