A very fast network logon cracker which support many different services. See feature sets and services coverage page – incl. a speed comparison against ncrack and medusa
Hydra was tested to compile on Linux, Windows/Cygwin, Solaris 11, FreeBSD 8.1, OpenBSD, OSX, QNX/Blackberry, and is made available under GPLv3 with a special OpenSSL license expansion. Currently this tool supports: Asterisk, AFP, Cisco AAA, Cisco auth, Cisco enable, CVS, Firebird, FTP, HTTP-FORM-GET, HTTP-FORM-POST, HTTP-GET, HTTP-HEAD, HTTP-PROXY, HTTPS-FORM-GET, HTTPS-FORM-POST, HTTPS-GET, HTTPS-HEAD, HTTP-Proxy, ICQ, IMAP, IRC, LDAP, MS-SQL, MYSQL, NCP, NNTP, Oracle Listener, Oracle SID, Oracle, PC-Anywhere, PCNFS, POP3, POSTGRES, RDP, Rexec, Rlogin, Rsh, S7-300, SAP/R3, SIP, SMB, SMTP, SMTP Enum, SNMP, SOCKS5, SSH (v1 and v2), Subversion, Teamspeak (TS2), Telnet, VMware-Auth, VNC and XMPP. For HTTP, POP3, IMAP and SMTP, several login mechanisms like plain and MD5 digest etc. are supported. This tool is a proof of concept code, to give researchers and security consultants the possiblity to show how easy it would be to gain unauthorized access from remote to a system. The program was written van Hauser and is additiionally supported by David Maciejak.