SPACEWatch Network and Enterprise Editions can carry out file-level analysis on space from various sources, including Microsoft Windows, Novell NetWare and UNIX/linux systems.
It can also search specified areas of IBM Lotus Domino servers and analyse file attachments in databases on those systems - including mail servers (if the Notes account used has appropriate access rights).
This means that you can, for example, carry out duplicates analysis across file and email servers - identifying which users have large quantities of unwanted/unused/duplicated file attachments in their email and on their file servers.
As with other systems that include user directories, SPACEWatch also gives you access to space analysis based on Domino Directory user/group/organizational structure.