 Amaya 10
Amaya, developed by W3C, is a web editor/browser that creates and updates documents directly on your website. W3C (WWW Consortium) needed a framework that could include as many of their technologies... Read more Aptana 2
Aptana is an html/javascript editor, however, it does not provide any WYSIWYG feature - but it is still an amazing editor with many advanced features. Aptana is intended for people developing dynamic... Read more Bluefish 1.0
Eventhough Bluefish is not a WYSIWYG editor - it is still considered a strong tool, however, mainly for experienced web developers/designers. Has support for unicode - and provides wizards for -... Read more Concrete5
You might want to consider Concrete 5 if you need a simple CMS (Content Management System) that can be used by both web developers and designers. This open source CMS has a few speed bumps but its... Read more Drupal 6.2
Drupal is an open source software package for individuals or communities of users that need to publish, organize and manage a website's content also know as a content management system (CMS). ... Read more IceBB 1.0-rc8
IceBB is an upcoming bulletin board/forum software. Since its initial release in 2004 IceBB has slowly gained in popularity and features. Today it is a feature rich forum software package that... Read more Joomla 1.5
Joomla is among the top two or three open source content management systems (CMS) on the market. Joomla offers an advanced CMS which is extremely modular built. This makes developing extensions easy... Read more Komodo Edit 5
Komodo Edit is an open source editor by ActiveState that is different from your run-of-the-mill editor in that it has many features that are usually absent in editors, but you might find in IDEs... Read more KompoZer 0.7.7
Kompozer is an open source web development tool built on NVU. The project strives to fix bugs in the NVU project and added new features to it. Both the HTML editor as well as the CSS editor has so... Read more Liferay Portal 4.4.0
Liferay Portal is enterprise quality portal software. A major focus is usability - allowing users to get started right away without spending too much time buried in thick manuals. However, being an... Read more Mozilla SeaMonkey
SeaMonkey settles all of your internet application needs in own package. Its a web-browser, email and newsgroup client, HTML authoring program and IRC chat client all-in-one. In most areas -... Read more Nucleus CMS 3.24
Nucleus is a lightweight application for publishing and maintaining everything surrounding your blog. It allows you to run you own complete blogging system on your own server giving you full control.... Read more Nvu 1.0
Nvu is a web development system primarily developed for Linux but is now also available for windows and mac. The project aims to be an open source alternative for the major commercial web authoring... Read more OpenLaszlo 4.0
OpenLaszlo is an open source development platform for web applications. It's main target today is generating macromedia flash files (swf)and AJAX/DHTML for use on web pages and sites. OpenLaszlo is... Read more OpenSTA 1.4.3
OpenSTA is a distributed software testing architecture. The main feature of OpenSTA is web (HTTP and HTTPS) performance and load/stress testing. It allows you to record different usage patterns on... Read more phpBB 3.0.0
phpBB is open source flat style forum software written in PHP programming language. It supports most major database systems, enabling smooth and problem-free installation. Once installed, the forum... Read more Quanta Plus 3.5
For quick and effortless web development - Quanta Plus is steadily becoming a worthwhile competitor to the commercial web editors on the market. Quanta Plus's features include multi-document... Read more Serna Free 4.2
Serna Free is an open source, powerful XML editor. It is geared toward those with no experience and uses WYSIWYG (What You See Is What You Get) for ease of use. Its appearance is a lot like a word... Read more SilverStripe 2.2
SilverStripe is an easy to use content management system (CMS) based on PHP. Not only does SilverStripe offer an very cool looking user interface, but is is really simple to get started with and... Read more TextPattern
Textpattern (TXP) is a content management system (CMS) that comes in more than 40 languages with a browser based interface. It can be used by bloggers and web publishers to manage their websites. It... Read more Typo3 4.2
Typo3, a content management system (CMS), is feature rich and yet is one of the easiest systems to learn. With new functions being created by more than 300 registered developers on a frequent basis,... Read more Umbraco 3.0.1
Umbraco is a unique Content Management Systems (CMS) written in ASP.NET. First of all Umbraco allows designers to have completely free hands in terms of layout, and thus making sure that your site is... Read more | 
Adobe Dreamweaver 
Amaya 10
