Communities & Directories

Opensource.org    Open Source Initiative (OSI) is a non-profit corporation dedicated to managing and promoting the Open Source Definition

Sourceforge.net   THE reference hosting directory for open source projects

Apache.org   Apache community of open-source software projects

Tigris.org   Community of open source software development projects

Objectweb.org    Open Source software community

Object-refinery  Directory of open source projects using Java

Opensourcetesting.org   Open source software testing tools for test analysts and test managers

Open Source Project Management   Project management open source tools directory

Open Source Scrum   Scrum agile project management open source tools directory

 Databases

MySQL    The most widely used open source database

Postgres

Firebird  The open source borland interbase version

Ozone     Object oriented database

Development tools

Netbeans   Sun's open source java development tool

Eclipse    IBM's open source developement IDE

Argouml   Java based modelling tool to design using UML

Suneido   Complete application development platform (language + relational database +components)

Kdevelop   C/C++ IDE

JBoss    J2EE-based Web application server

JUnit    Regression testing framework to implement unit tests in Java

csUnit   Unit testing tool for the Microsoft .NET Framework

Bugzilla   Bug Tracking System