SONAR is an open source quality management platform, dedicated to continuously analyze and measure source code quality, from the portfolio to the method.
Quartz is an open source project that offers an extensive set of job scheduling features. In this article, software engineer Michael Lipton and IT architect Soobaek Jang introduce the Quartz API, starting with a general overview of the framework and concluding with a series of code examples that illustrate its fundamental features. After reading this article and following the code examples, you should feel capable of incorporating the basic features of Quartz into any Java application.
Jericho HTML Parser is a java library allowing analysis and manipulation of parts of an HTML document, including server-side tags, while reproducing verbatim any unrecognised or invalid HTML.