The PDT project is working towards providing a PHP Development Tools framework for the Eclipse platform. This project will encompass all development components necessary to develop PHP and will facilitate extensibility. It will leverage the existing Web Tools Project in providing developers with PHP capabilities....

libpng is the official PNG reference library. It supports almost all PNG features, is extensible, and has been extensively tested for over 17 years.

libpng is available as ANSI C source code and requires zlib 1.0.4 or later (1.2.3 or 1.1.4 recommended due to potential security vulnerabilities in earlier versions). In addition to the main library sources, libpng includes the rpng, rpng2 and wpng demo programs, the pngminus demo program, a subset of Willem van Schaik's PngSuite test images, and Willem's VisualPng demo program. Configure, CMake, Visualc projects, and various makefiles are included for building libpng....

Highly configurable GPL-licensed FTP server software.,

A simple, developer-oriented, object-oriented, library for rapid Twitter integration.

Mantis Bug Tracker is a free and open source web-based bug tracking system released under the terms of the GNU General Public License version 2. The most common use of MantisBT is to track software defects. However, MantisBT is often configured by users to serve as a more generic issue tracking system and project management tool....

MySQL Query Browser is the easiest visual tool for creating, executing, and optimizing SQL queries for your MySQL Database Server. The MySQL Query Browser gives you a complete set of drag-and-drop tools to visually build, analyze and manage your queries.

iptables is the userspace command line program used to configure the Linux 2.4.x and 2.6.x IPv4 packet filtering ruleset. It is targeted towards system administrators.

amavisd-new is a high-performance interface between mailer (MTA) and content checkers: virus scanners, and/or SpamAssassin. It is written in Perl for maintainability, without paying a significant price for speed. It talks to MTA via (E)SMTP or LMTP, or by using helper programs. Best with Postfix, fine with dual-sendmail setup and Exim v4, works with sendmail/milter, or with any MTA as a SMTP relay. For Courier and qmail MTA integration there is a patch in the distributed package....

Launchpad is a suite of tools that help people and teams to work together on free software. It is hosted at Launchpad.net by Canonical, Ltd, and it is open source itself, licensed under the GNU Affero General Public License, version 3.

XChat is a fully-featured graphical IRC client using the GTK toolkit. It can be compiled to use GNOME and Perl scripting.