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
WebStorm is a powerful IDE tailored for professional web development with extensive features and support for various frameworks, making it ideal for complex projects. In contrast, KompoZer is a lightweight WYSIWYG editor suitable for beginners and small projects, but lacks the advanced capabilities required for modern web development.