FireFox Extensions
Pearl Crescent Page Saver
Pearl Crescent Page Saver is an extension for Mozilla Firefox that lets you capture images of web pages in PNG format. The entire page or just the visible portion may be captured. Options let you control whether images are captured at full size (which is the default) or scaled down to a smaller size.
Xinha Editor
Xinha - is a powerful WYSIWYG HTML editor component that works in Mozilla based browsers. This Mozilla Firefox extension makes it easy to build the right editor for multiple purposes, from a restricted mini-editor for one database field to a full-fledged website editor.