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Windows, Mac, Linux









File Size

6 MB

KompoZer is a free Web page editor based on the WYSIWYG principle with similar functions like the fee-based alternatives, Adobe Dreamweaver or Microsoft FrontPage. With KompoZer, you can easily create and edit HTML pages and CSS. You can adapt and change the formatting and KompoZer automatically ensures the correct source code. Nevertheless, the code can be edited and added at any time or supplemented with a special CSS editor. An integrated FTP module allows you to easily upload all content onto your server. With this, KompoZer is a all-in-one solution that allows you to create, manage and upload your websites. In addition to the FTP module, KompoZer can be expanded with other modules or themes to your needs.


Originally the program was developed by Netscape Communications Corporation and published along with the browser Netscape Navigator in a suite of programs. In 1998, the Netscape software was transferred to the Mozilla Application Suite and further developed in this framework as free software. Meanwhile, the Suite has again divided into sub-programs (the exception is the SeaMonkey project) and  after the development of Nvu, the first successor of the software, has been terminated, there is now KompoZer as a standalone program.


  • A change between a normal view (WYSIWYG), an HTML tag representation and a source view is possible. Even a split view is integrated, so that you can compare the source code with the complete HTML page
  • Syntax highlighting with support for HTML, XML, CSS and JavaScript
  • The W3C Web Standard and HTML 4.01 are supported. Even an HTML Validator is integrated.
  • Use tabs to edit multiple pages simultaneously and easily switch between them
  • A built-in spell checker facilitates the entry of the correct texts
  • An FTP module allows a direct upload of web sites to an FTP server

Fabien Cazenave
Software by this Author




English, German, French, Japanese, Spanish, Chinese, Italian, Nederlands, Russian, Korean, Portuguese, Esperanto, Polish, Finish


Freeware - MPL, GPL and LGPL Multiple License


Windows, Mac, Linux



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