Social Source Commons

A nonprofit service with moderate monthly fees and strong customization support. Online campaigns, donations, event registration, mail blasting, and basic member tracking.

FrontlineSMS provides an affordable, standalone turn-key solution to NGOs, allowing them to access 'group' SMS technology.

GanttProject is a tool for creating a project schedule by means of a Gantt chart and resource load chart. GanttProject allows you to break down your project into a tree of tasks and assign human resources that have to work on each task. You can also establish dependencies between tasks, like "this task can't start until this one is finished". GanttProject renders your project using two charts: Gantt chart for tasks and resource load chart for resources. You may print the charts, generate PDF and HTML reports, exchange data with Microsoft(R) Project(TM) and spreadsheet applications.

Freemail is an email-like messaging system that transports all messages over Freenet 0.7 in order to achieve anonymity and censorship-resillience

Eclipse is an open source community whose projects are focused on providing an extensible development platform and application frameworks for building software.

Java chat server software

Visual report builder/designer for JasperReports written in 100% pure java.

Java based text editor, with syntax highliting and other great features

Here at the Bouncy Castle, we believe in encryption. That's something that's near and dear to our hearts. We believe so strongly in encryption, that we've gone to the effort to provide some for everybody.

Java-based Internet mapping server for deployment of mapping applications.

Ant is a Java-based build tool. In theory, it is kind of like Make, without Make's wrinkles and with the full portability of pure Java code.

According to Ant's original author, James Duncan Davidson, the name is an acronym for "Another Neat Tool".

Later explanations go along the lines of "ants do an extremely good job at building things", or "ants are very small and can carry a weight dozens of times their own" - describing what Ant is intended to be.

Building cross platform apps (like the VaultletSuite 2 Go) with Java requires an easy to use automation tool. Ant fits the bill for me!

Java Integrated Development Environment (IDE).

Prototype is a JavaScript Framework that aims to ease development of dynamic web applications.

An HTML to XML parser and tag balancer for Java.

Art of Illusion is a free, open source 3D modelling and rendering studio. It is written entirely in Java, and should be usable on any Java Virtual Machine.

Prefuse is a set of software tools for creating rich interactive data visualizations. The original prefuse toolkit provides a visualization framework for the Java programming language. The prefuse flare toolkit provides visualization and animation tools for ActionScript and the Adobe Flash Player.

A Wiki supporting skins, APIs, RSS feeds, PDFs developed in Java.

JSP servlet container (web application server for JSP)

Solr is an open source enterprise search server based on the Lucene Java search library, with XML/HTTP and JSON APIs, hit highlighting, faceted search, caching, replication, a web administration interface and many more features. It runs in a Java servlet container such as Tomcat.

SoNIA is a Java-based package for visualizing dynamic or longitudinal "network" data.