A curated listing of mature, production ready, commercial and open-source code that solves real-world requirements.
jappstart is a Java framework for Google App Engine built on Spring, Spring Security, and Sitemesh. The project aims to be the starting point for Google App Engine Java applications. It's not a framework in the traditional sense -- rather it is designed to provide a solid foundation for GAE/Java applications that can be easily extended by developers.FREE
contacts.droid simplifies dealing with contacts and addresses on Android.$4.99
Calculates string math expressions from user input or other sources. Includes calculator UI component for out of the box usefulness.$7.99+
Lucene full-text search Framework for Android offers a rapid way to integrate and manage full text search in Android by using the best open source full-featured text search engine library – Lucene.$99.99+
A pluggable drop-down suggestion list primarily built for Swing text fields.$4.99+
An automated program that launches automatically several samples of processes in more than one JVM and without human intervention. With M.G.P you can save yourself from the agony of waiting to start a computer program of some private or public business that you are operating.$99,999.99+
A card deck and card class framework to make your card game easier to develop$4.99+