With proper mark-up/logic separation, a POJO data model, and a refreshing lack of XML, Apache Wicket makes developing web-apps simple and enjoyable again. Swap the boilerplate, complex debugging and brittle code for powerful, reusable components written with plain Java and HTML....

Calligra Suite is a free, integrated graphic art, work & management applications suite, made with Qt & KDE libraries, running on Linux Desktops, Windows, OS X and mobile phones.

It includes:
Words – for word processing
Sheets – for spreadsheeting...

phpPgAdmin is a fully functional PHP-based administration package for PostgreSQL. It has all the basic functionality you need to completely administer a PosgreSQL server and/or database, including the ability to administer views, sequences, stored procedures, and triggers. Features include the ability to create and drop databases; create, copy, drop, and alter tables/views/sequences/functions/triggers; edit and add fields (to the extent Postgres allows); execute any SQL-statement, even batch-queries; manage keys on fields; create and read dumps of database and tables; and administer one single database, multiple servers, and Postgres users/groups/roles....

Apache JMeter is a 100% pure Java desktop application designed to load test functional behavior and measure performance. Apache JMeter may be used to test performance both on static and dynamic resources (files, Servlets, Perl scripts, Java Objects, Data Bases and Queries, FTP Servers and more). It can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types. You can use it to make a graphical analysis of performance or to test your server/script/object behavior under heavy concurrent load....

MbUnit is an advanced xUnit framework. It is easily extensible and offers features that no other xUnit framework does. It has been described as NUnit on crack. One of the most important of it's unique features is parameterized unit tests.

Liferay Portal is the world's leading enterprise open source portal framework, offering integrated Web publishing and content management, an enterprise service bus and service-oriented architecture, and compatibility with all major IT infrastructures....

JRuby is an 100% pure-Java implementation of the Ruby programming language.

JRuby is the effort to recreate the Ruby interpreter in Java. JRuby is tightly integrated with Java to allow both to script any Java class and to embed the interpreter into any Java application....

OpenLayers is a web mapping framework, allowing users to pull in disparate sources of data and display them in an AJAX mapping interface.

Fluxbox is a lightweight and highly configurable window manager with pwm-like tabs.

Python Paste helps Python web development and web application installation by providing tools for both developers and system administrators. Among other things, Python Paste includes a variety of middleware components to develop, test, configure, and run WSGI applications....