LINQPad - A scratchpad for C#, F# and VB code including Linq queries.
ServerSuit - ServerSuit is a browser based program that enables remote Linux administration, monitoring, website hosting, and server setup automation.
LINQ Insight - Execute LINQ Queries directly from Visual Studio without building the application. Verify your LINQ queries in a single click and view data with LINQ Insight!
RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems
Snippet Compiler - Authors description: "Snippet Compiler compiles snippets."
Nagios - Complete monitoring and alerting for servers, switches, applications, and services