Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
BLOCS - Visual web design app.
Textpattern - Textpattern is an elegant content management system that is free, open source software.
Webflow - Build dynamic, responsive websites in your browser. Launch with a click. Or export your squeaky-clean code to host wherever you'd like. Discover the professional website builder made for designers.
TYPO3 - TYPO3.com - Infos, SLAs, Extended Support Versions and more
Adobe Dreamweaver - Adobe Dreamweaver is a proprietary web development tool developed by Adobe Systems.