FrogSQL
Simple SQL execution tool for SQL Server and Oracle databases
Frog is a simple tool that provides a quick and easy way to execute multiple statements against SQL Server and Oracle Databases. It has an input pane where the SQL is entered, and an output pane that shows the results. The tool is comprised of a single executable that requires no installation.
The VB.NET 2010 project source is supplied as a .zip file. This project is very easy to modify for your own purposes (if you have either the free VB.NET 2010 Express edition, or full blown VS 2010).