RdpGuard - RdpGuard allows you to protect your Remote Desktop (RDP), POP3, FTP, SMTP, IMAP, MSSQL, MySQL, VoIP/SIP from brute-force attacks by blocking attacker's IP address. Fail2Ban for Windows.
SSHGuard - SSHGuard monitors services through their logging activity.
IPBan - Block hacking attempts on RDP, SSH, SMTP and much more
Syspeace - Syspeace is a Intrusion Detection and Prevention System prevents brute force attacks on Microsoft Windows Servers. Syspeace is made for you, with the safety of every type of business in mind.
Anti DDoS Guardian - Stops RDP Brute force attack as well as DDoS agaist IIS, FTP, SMTP, and several more.
SpyLog - Monitor logs from several sources and execute actions based on some rules.