Aqua Data Studio 

Aqua Data Studio is a SQL editor and developer tool that allows developers to easily create edit and execute SQL scripts as well as browse database structures
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AlligatorSQL Business Intelligence Edition 

AlligatorSQLis the first IDE covering the most common database servers in the market through on common conception. Crossadministration and crossdevelopment features offer solutions to all imaginable challenges via one integrated tool.
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Installgen 

Installgen implements Oracle´s best practices for over 100 tasks required when performing the installation of Oracle primary and standby database servers. Free demo available for Windows, MacOSX, Linux and Solaris.
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