ssh brute force freeware downloads
Low and Slow Brute Force FTP Scanner
1.0 freeware download... a free utility that attempts low and slow brute force sign-ons against a selected FTP server, FTPS server, ...
SilverSHielD
6.1.2.132 freeware download... has some nice security features such as a forced delay upon new connection (useful to defeat brute-force attacks) and a handy "tarpit" to ban attackers'