The past few months I’ve been looking at open source alternates for my PC. Here’s a list of open source alternates I currently use and evaluating for use. Most of these work on Windows and Linux, so they work fine on my Home (Linux) and Office (Windows) PC.

CSSED
CSS editor featuring auto completion, syntax highlighting and syntax validation.
cssed.sourceforge.net/

Thunderbird
Enjoy safe, fast, and easy email, with intelligent spam filters, quick message search, and customizable views. Brought to you by Mozilla, Thunderbird makes email better.
www.mozilla.com/en-US/thunderbird/

Firefox
The well known browser
www.mozilla.com/en-US/firefox/

Aptana
Aptana is a robust, JavaScript-focused IDE for building dynamic web applications.
www.aptana.com/

Open Office
OpenOffice.org is a multiplatform and multilingual office suite and an open-source project. Compatible with all other major office suites, the product is free to download, use, and distribute.
www.openoffice.org/

Miranda IM
Miranda IM is an open-source multi protocol instant messenger client for Microsoft Windows. Currently supports Jabber, IRC, AIM, Yahoo and MSN
www.miranda-im.org/

Gaim
An instant messenger client, which can handle multiple protocols, including AIM, ICQ, Yahoo!, Jabber, and Gadu-Gadu
http://gaim.sourceforge.net/downloads.php

Inkscape
Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, Freehand, CorelDraw, or Xara X using the W3C standard Scalable Vector Graphics (SVG) file format.
www.inkscape.org/

Audacity
A free, open source software for recording and editing sounds in Linux, Mac OS X, and other operating systems.
audacity.sourceforge.net/

Scribus
Scribus is an open-source program that brings professional page layout to Linux/Unix, MacOS X and Windows desktops with a combination of “press-ready” output and new approaches to page layout.
www.scribus.net/

ArgoUML
UML modeling tool that includes support for all standard UML 1.4 diagrams.
argouml.tigris.org/

Notepad ++
A Notepad Replacement. Editor with tabbed interface, configurable syntax highlighting, syntax folding, line numbering, multi-view, bookmarks and regular expression search
notepad-plus.sourceforge.net/

PDF Creator
PDFCreator easily creates PDFs from any Windows program. Use it like a printer in Word, StarCalc or any other Windows application.
sourceforge.net/projects/pdfcreator/

PHPeclipse
PHP Plugin for Eclipse IDE. PHP - Support for the Eclipse IDE Framework (www.eclipse.org); Some Features are PHP parser, debugger, code formatter, outline view, templates
http://sourceforge.net/projects/phpeclipse

Dia
Dia is inspired by the commercial Windows program ‘Visio’, though more geared towards informal diagrams for casual use. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and many other diagrams. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape.
www.gnome.org/projects/dia/

GIMP
GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages. Windows version also available.
www.gimpshop.net/
www.gimp.org/

Let me know if you have your favorite list of Open Source software which I haven’t listed here.

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