Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
LINQPad - A scratchpad for C#, F# and VB code including Linq queries.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
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!
Better Uptime - We call you when your website goes down
Snippet Compiler - Authors description: "Snippet Compiler compiles snippets."