Ehcache is a standards-based cache used to boost performance, offload the database, and simplify scalability. It is robust, proven, and full-featured, and has hundreds of thousands of production deployments.
Guitar Scale Expert is a dictionary of 53 different scales you can use for your guitar. It features allows you to view, listen to, and print every scale, and includes a guitar tuner.
Expense report software.
A utility that selectively removes preprocessor conditionals.