Colligo Reader is a free product that lets you easily download SharePoint content and read it while working offline.

http://www.colligo.com/products/sharepoint/reader.asp

Colligo ContributorTM is an easy-to-deploy .NET client application that extends the power of Microsoft Office SharePoint® to the desktop



Microsoft SharedView

Connect with up to 15 people in different locations and get your point across by showing them what's on your screen. Share, review, and update documents with multiple people in real time


LINQPad

lets you interactively query SQL databases in a modern query language: LINQ

http://www.linqpad.net/