MySQLTuner – High-performance MySQL tuning script | Ubuntu Geek
sudo aptitude install mysqltuner

Using Mongo for Real-Time Analytics
Nice trick I'd not seen before from Paul Hammond in the comments:"something like "INSERT INTO Table (id, views) VALUES (1234, 1) ON DUPLICATE KEY UPDATE views = views + 1;" works pretty well for this purpose in MySQL."

Exporting MySQL and PostgreSQL Database Contents
Exporting MySQL and PostgreSQL Database Contents

SimpleDoc - web-based documents management system
web-based documents management system

DBKiss - php database browser (mysql, postgresql)
DBKiss

Several ways to reset MySQL root password | SysAdmin.MD
command

My Drizzle Article in Linux Magazine (XtraDB and Sphinx too!)
After a few years off, I've been doing some writing for Linux Magazine (which is on-line only) again recently. First off, my just published feature article is Drizzle: Rethinking the MySQL Database Kernel. As you might have guessed, it looks at...