Total Commander is a popular file manager for Windows, Windows CE, Windows Phone, and now also Android.
Total Commander has a built-in FTP client and it keeps the FTP logins and passwords in wcx_ftp.ini configuration file in an encrypted format.
Total Commander FTP Password Recovery Tool allows you to recover the FTP account password information for all versions of Total Commander / Windows Commander.
https://www.pelock.com/products/total-commander-ftp-password-recovery
Additionally, you will find there the original reverse engineered source code of the decryption algorithm in x86 assembly and in a more friendly PHP source code format.