Krusader supports the following additional archivers:

archivers/zip
archivers/unzip
archivers/bzip2
archivers/rar
archivers/unrar
archivers/unace
archivers/unarj
archivers/rpm

To use 'update DB' button in the locate dialog, open Settings->Konfigurator, 
Dependencies and write '/usr/libexec/locate.updatedb' into the field 'updatedb'.

Krusader allows to diff file with kdiff3 (textproc/kdiff3) or kompare (devel/kdesdk).

Krusader supports krename (sysutils/krename) for renaming operations.