Fail2ban - Intrusion prevention framework
Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
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.
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface
SSHGuard - SSHGuard monitors services through their logging activity.
Cellist - Cellist is an all-in-one HTTP debugging proxy software designed for OS that provides a straightforward approach to put a proxy between the HTTP client and the internet.