oraToolKit is the Swiss Army Knife for Oracle. Standards and well designed tools help DBA's mastering Oracle 10g / 11g throughout the whole lifecycle. OTK runs on Linux, zLinux, Solaris, AIX, HP-UX and other UNIX based systems.
Opensource script to identify IO-constrained MS SQL Server databases
Sumeet Bansal, Fusion-io Principal Solutions Architect, shows how Microsoft SQL Server users can quickly determine whether their database will benefit from Fusion-io ioMemory products.
GEBORA is an administrative tool for the Oracle Relational Database Management System. It's an OpenSource alternative to TOAD. Current version has syntax highlight, schema browser, pl/sql viewer and runner and many other features.