File Transfer (XEP-0096)

=MD5 hash support=

Clients differ in whether they send the 'hash' attribute when sending a file, and whether they check the hash after downloading a file. This is an attempt at summarizing the situation; feel free to extend and correct it.

Sends, but doesn't check

 * jabber.el (since 0.7.1, assuming it finds such a tool in the path)

Neither sends nor checks

 * Tkabber (SVN trunk of 2007-05-08)
 * Psi (SVN trunk of 2007-05-08)
 * Gajim (SVN trunk of 2007-05-08)