KompoZer is an open source WYSIWYG HTML editor based on the now-discontinued Nvu editor. KompoZer is maintained as a community-driven fork, and is a project on Sourceforge. Developed by Mozilla
License: Open Source
HTML-Kit is a comprehensive web development tool suited for professionals, offering advanced features like HTML validation and project management, while KompoZer is a simpler, user-friendly WYSIWYG editor designed for beginners, focusing on ease of use and basic web design capabilities. Consequently, HTML-Kit is better suited for developers needing extensive control and features, whereas KompoZer is ideal for quick, straightforward projects.