Miranda IM - an Open Source IM

Miranda IM - Open Source Instant Messenger

Miranda IM is a fast and lightweight open source Instant Messenger client for Microsoft Windows. It supports various protocols and it’s fairly easy to use and configure. Miranda IM uses very little memory and is extremely fast. It requires no installation
Download Miranda IM for Fast and Light weight IM Client

Instantbird

Open source Instant messenger

Instantbird is a cross-platform instant messaging client (IM Client) based on Mozilla's XULRunner and the open source library libpurple used in Pidgin. Instantbird is free software available under the GNU General Public License. Instantbird open source client can used 250 add-ons; allowing user to customize their messaging experience.
Download Instatbird IM Client for cross platform instant messaging solution

Doctrine ORM

Doctrine ORM or object relational mapper can write database queries in a proprietary object oriented SQL dialect called Doctrine Query Language (DQL). This is a powerful substitute to the SQL that maintains flexibility without requiring unnecessary code duplication.

Glade – UI Designer

A User Interface Designer for GTK+ and GNOME

Glade is a RAD tool to enable quick & easy development of user interfaces for the GTK+ toolkit and the GNOME desktop environment. The user interfaces designed in Glade are saved as XML, and by using the GtkBuilder GTK+ object these can be loaded by applications dynamically as needed.