Palamida, a company which makes software for analyzing open-source code has declared top 25 open source projects which are most popular for enterprise use:

1. Netbeans:
Fully-featured Java IDE written completely in Java, with many modules available, such as: debugger, form editor, object browser, CVS, emacs integration etc. Runs on Windows, Linux, Mac OS X and Solaris.

2. Eclipse:
An IDE with a built-in incremental Java compiler and a full model of the Java source files

3. JUNit (http://junit.sourceforge.net):
JUnit is a unit testing framework for the Java programming language

4. httpunit:
Automates website testing, including form submission, JavaScript, basic http authentication, cookies and automatic page redirection, and allows Java test. You can use HttpUnit with JUnit to test your own web sites.

5. PMD :
Scans source code and looks for potential problems possible bugs, unused and suboptimal code, over-complicated expressions and duplicate code.

6. Valgrind:
Valgrind is a GPL'd system for debugging and profiling Linux programs. With Valgrind's tool suite you can automatically detect many memory management and threading bugs, avoiding hours of frustrating bug-hunting, making your programs more stable. You can also perform detailed profiling to help speed up your programs.

7. FindBugs :
A program which uses static analysis to look for bugs in Java code

8. Hibernate:
Hibernate an open source java persistence framework project. Perform powerfull object relational mapping and query databases using HQL and SQL.

9. SQLite:
SQLite is an ACID-compliant relational database management system contained in a relatively small (~500kB) C programming library.

10. Apache Derby:
A relational database implemented entirely in Java.

11. PostgreSQL:
Open source relational database system.

11. MySQL :
The world's most popular open source database

12. zLib:
 A Massively Spiffy Yet Delicately Unobtrusive Compression Library

13. libpng:
libpng is the official PNG reference library. It supports almost all PNG features, is extensible, and has been extensively tested for over 13 years.

14. FFMpeg :
FFmpeg is a complete solution to record, convert and stream audio and video. It includes libavcodec, the leading audio/video codec library. FFmpeg is developed under Linux, but it can be compiled under most operating systems, including Windows.

15. Freetype:
A Free, High-Quality, and Portable Font Engine

16. JFreeChart :
JFreeChart is a free 100% Java chart library that makes it easy for developers to display professional quality charts in their applications.

17. Velocity:
Velocity permits you to use a simple yet powerful template language to reference objects defined in Java code. It is written in 100% pure Java and can be easily embedded into your own applications. The engine is the core of the Apache Velocity Project

18. Pentaho Reporting :
Pentaho Reporting is a collection of open source projects primarily focused on the creation, generation and distribution of rich and sophisticated report

20. JasperReports:
A powerful report-generating tool that has the ability to deliver rich content onto the screen, to the printer or into PDF, HTML, XLS, CSV and XML files.

21. Prototype:
Provides class-style Object Oriented and AJAX, freely distributable under the terms of an MIT-style license.

22. Script.aculo.us:
A collection of Web 2.0 style JavaScript libraries that help web developers to easily add visual and ajax effects to projects. Requires Prototype.

23. DWR - Direct Wed Remoting:
DWR is a Java library that enables Java on the server and JavaScript in a browser to interact and call each other as simply as possible.

24. YUI -Yahoo User Interface:
The YUI Library is a set of utilities and controls, written in JavaScript, for building richly interactive web applications using techniques such as DOM scripting, DHTML and AJAX.

25. jQuery :
A fast, concise, library that simplifies how to traverse HTML documents, handle events, perform animations, and add AJAX.

Palamida was launched in 2003 after our founders learned first-hand what happens when companies don't have full visibility into the code base of their software applications based on Open Source Software. Their experiences inspired them to create a solution to streamline the process of identifying, tracking and managing the mix of unknown and undocumented Open Source that comprises a growing percentage of today's software applications. Palamida is the industry's first application security solution targeting today's widespread use of Open Source Software. It uses component-level analysis to quickly identify and track undocumented code and associated security vulnerabilities as well as intellectual property and compliance issues and allows development organizations to cost-effectively manage and secure mission critical applications and products.

http://www.palamida.com

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