There are two modules that come to mind that make IT considerations such as content and browser installation management a bit easier, mod_dav and mod_roaming.
The DAV (Distributed Authoring and Versioning) specification is implemented in Apache with mod_dav and morphs Apache into a content management system. mod_dav requires the expat XML parsing library and some special consideration to the security implications of having a content management system on a production Web server. The following DAV commands, as HTTP request methods, are implemented by mod_dav:

• PUT
• DELETE
• PROPFIND
• PROPPATCH
• MKCOL
• COPY
• MOVE

An upcoming release will complete the repertoire by providing LOCK and UNLOCK and by implementing the full DAV spec, will enable Apache to be a backend for Microsoft Office 2000's DAV client capabilities.