http://freeworld.thc.org/releases/hydra-5.7-src.tar.gz

CHANGELOG for 5.7: (last public version was 5.4)
###########
* Added ncp support plus minor fixes (by David Maciejak @ GMAIL dot com)
* Added an old patch to fix a memory from SSL and speed it up too from kan(at)dcit.cz
* Removed unnecessary compiler warnings
* Enhanced the SSH2 module based on an old patch from aris(at)0xbadc0de.be
* Fixed small local defined overflow in the teamspeak module. Does it still work anyway??

Release 5.6 PRIVATE VERSION
###########
* Moved to GPLv3 License (lots of people wanted that)
* Upgraded ssh2 module to libssh-0.4.x (thanks to aris (at) 0xbadc0de.be for the 0.2 basis)
* Added firebird support (by David Maciejak @ GMAIL dot com)
* Added SIP MD5 auth patch (by Jean-Baptiste Aviat jba [at] hsc [dot] `french tld')
* Removed Palm and ARM support
* Fix for cygwin which falsely detected postgres library when there was none.
* Several small bugfixes