The Cassandra helpdesk is a client-based help desk application for customer support. The objective is to achieve a substantial easement of customer support for both, the constituent and its customers.
Avignon is an acceptance test system that allows you to write executable tests in a language that you define. It uses XML to define the syntax of the language but, if you choose to extend the language, leaves the semantics of the tests up to you.
ServerSpy is a VB.Net based application that installs as a service and serves to monitor uptime and availability of other networked servers and web sites.