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.
Fail2ban - Intrusion prevention framework
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.
win2ban - win2ban is a Fail2ban implementation for Windows systems.