The Small Business Server is a web based.
The software contains a web interface for administration of the system and an Active Directory based on Samba resp. a groupware based on Sogo. It can be used as SBS for sharing data via Webdav and SMB and administrate website based on Apache. Also it is possible to manage certificate.
mod_psldap is an Apache module for leveraging LDAP services built on the OpenLDAP library and the Apache APIs, to include web based A&A, web based updates to the LDAP store, server-side XSLT processing, and session management across servers.
The iF.SVNAdmin application is a web based GUI to your Subversion authorization file. It is based on PHP 5.3 and requires a web server (Apache) to be installed. (+ LDAP integration; no database required)