Linqpad - interactively query databases in a modern query language
Spotted this and it looked useful Download LINQPad
Tired of querying in antiquated SQL?
Well, you don't have to! LINQPad lets you interactively query databases in a modern query language: LINQ. Kiss goodbye to SQL Management Studio!
LINQPad supports everything in C# 4.0 and Framework 4.0:
LINQ to Objects
LINQ to SQL, Entity Framework and DevForce Models
LINQ to XML
And that's not all - there's also specific support for:
OData / WCF Data Services - including StackOverflow, and Windows DataMarket
SQL Azure, SQL Table Storage, Oracle, SQLite and MySQL
Microsoft Dynamics CRM
Mindscape LightSpeed ORM
DevExpress eXpress Persistent Objects
(Even old-fashioned SQL!)