Apple iWork - iWork is an office suite by Apple.
BlueGriffon - An HTML editor based on Mozilla rendering engine.
Airborn - Create and edit documents online without sacrificing your privacy
Adobe Dreamweaver - Adobe Dreamweaver is a proprietary web development tool developed by Adobe Systems.
Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
CoffeeCup HTML Editor - The CoffeeCup Free HTML Editor is a drag-and-drop HTML Editor with built-in FTP uploading.