PMD is an extensible cross-language static code analyzer.
It finds unused variables, empty catch blocks, unnecessary object creation, and more.
It includes CPD, a tool to detect chunks of identical code.
Quartz is an enterprise-class job scheduler for integration with stand-alone Java applications and full-scale J2EE applications. Advanced features include clustering and participation in container managed transactions. It is highly scalable, very lightweight, and supports very complex scheduling.
hsqldb is a relational database engine written in Java with a JDBC driver that supports a subset of ANSI SQL:1999. It offers a small, fast database engine. Embedded and server modes are available. It includes tools such as a minimal Web server, in-memory query and management tools (which can be run
... [More] as applets or servlets, too), a test framework, PHP compatibility, Eclipse and NetBeans IDE compatibility, and a number of demonstration examples. [Less]
php.js is an open source project in which we try to port PHP functions to JavaScript. By including the php.js library in your own projects, you can use your favorite PHP functions client-side.
No server component required.
Cairo is a 2D graphics library with support for multiple output devices, both raster and vector.
It focusses on high quality output at display resolutions and features an extremely easy to use API.
The Simple Logging Facade for Java or (SLF4J) is intended to serve as a simple facade for various logging APIs allowing to the end-user to plug in the desired implementation at deployment time. SLF4J also allows for a gradual migration path away from Jakarta Commons Logging (JCL).
Open Source administration and management tools for the PostgreSQL database and derivative products such as EnterpriseDB's Postgres Plus and GreenPlum Database. Includes a graphical administration interface, an SQL query tool with grahical EXPLAIN, a procedural code editor, an SQL/shell/batch
... [More] scheduling agent, Slony-I management and much more. pgAdmin III is designed to answer the needs of most users, from writing simple SQL queries to developing complex databases. The graphical interface supports all PostgreSQL features and makes administration easy. Available in more than a dozen languages and for several operating systems, including Microsoft Windows, Linux, FreeBSD, Mac OSX and Solaris. [Less]
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