htpasschange.pl
This is a quick program I wrote to allow unix based systems to let their users change passwords on pages protected by either .htaccess files or via the access.conf. Should be fairly easily reconfigurable.
It works as a SSI (Server-Side Include) that generates its own form and processes it. Security is basic and depends on file permissions being set correctly and existing security to be there. Please read the documentation for more info.
Download it!