Sale has ended but you can still get this app.
Download SQLPro for Oracle Now
SQLPro for Oracle

Official Description

SQLPro for Oracle is a lightweight Oracle database client, allowing quick and simple access to Oracle Servers.

Features include:
+ Syntax highlighting (including customizable themes).
+ Intellisense.
+ Tabbed based interface.
+ Support for executing multiple queries at once.
+ Quick access to tables, columns and more.
+ Stored procedure execution.

This SQL Client does NOT work with MySQL or other database clients.