WebMonitor - simple and free

The main purpose of the WebMonitor application, is to be able to have an easy and simpel way to monitor your server/host through HTTP. You run the application from your desktop and get notifications if on of you monitors act abnormal. This can mean a ruled has failed, ex. you have set the monitor of CodePlex.com to have an MaxResponse time to 500 ms. If the reponse time exceeds this value, an balloonTip will show you that something is up.

http://www.codeplex.com/WebMonitor

Live Services - Live Framework

The Live Framework is the uniform way for programming Live Services from a variety of platforms, programming languages, applications and devices. Consume and combine Live Services to build applications that span across digital devices and the web.
Learn more and understand the benefits of programming Live Services with the Live Framework.

Its available here: http://dev.live.com/liveframework/

Using Panel.DefaultButton property with LinkButton control in ASP.NET

ASP.NET has great limitation — only one server form on the page. Even if you are developing complex page, which looks like several forms with different submit buttons, in fact you have only one form. So we have a problem: How browser understanding which button should be triggered when user pressed ENTER? It uses first Button control (usually that’s wrong), and if you have LinkButton’s, they would never be triggered. In ASP.NET 2.0 new property has been added to the Panel and HtmlForm controls — DefaultButton, which can be used to specify ID of the control, which implements IButtonControl interface (usually Button and LinkButton). This button control would be triggered when user pressed ENTER. But there is one big problem exist: LinkButton control would not be triggered in Firefox on ENTER. In this article I will show why this problem take place and how to solve.

Read the solution at Dmytro's Blog: Using Panel.DefaultButton property with LinkButton control in ASP.NET