KompoZer is a WYSIWYG editor for developing HTML documents. With the help of this program you will be able to create web pages for websites, using the power of CSS styles. KompoZer is a complete web authoring system that combines web file management and easy-to-use WYSIWYG page editing, while keeping the simplicity that allows even non-professionals to create professional-looking sites. The program does not require knowledge in the field of HTML markup language - most operations on designing web pages are carried out in an intuitive mode, just as documents are created in Word editor.
KompoZer is based on the Gecko engine and the Mozilla Composer code base, and it was created as a continuation of the discontinued Nvu editor. KompoZer includes a CSS editor (CaScadeS), a built-in FTP site manager for uploading pages to a server and quick switching between the Normal, HTML Tags, Source and Preview views. You can use tables, forms and templates, pick colors with a color picker, open editable pages in different tabs, and automatically clean files from unnecessary code with the markup cleaner. It can also validate HTML and check the spelling of the text. Among other things, the program allows you to customize the toolbars. KompoZer is free and open-source software (MPL, GPL and LGPL); the last release, 0.8b3, came out in 2010, and the project is no longer developed.
KompoZer offers seamless web page creation with intuitive controls similar to Word, requiring no prior knowledge of HTML.