Java: ProGuard

ProGuard
ProGuard is a free Java class file shrinker, optimizer, and obfuscator. It can detect and remove unused classes, fields, methods, and attributes. It can then optimize bytecode and remove unused instructions. Finally, it can rename the remaining classes, fields, and methods using short meaningless names. The resulting jars are smaller and harder to reverse-engineer.

FireFox: InFormEnter

InFormEnter
(This link will be outdated when FireFox has a systemupdate)

FireFox: fireFTP

fireFTP
(This link will be outdated when FireFox has a systemupdate)

Eclipse: EclipseHTMLEditor

EclipseHTMLEditor

Eclipse HTML Editor is an Eclipse plugin for HTML/JSP/XML Editing. It works on Eclipse 3.0 (or higher), JDT and GEF. It has following features.

HTML/JSP/XML/CSS Hilighting

HTML/JSP Preview

JSP/XML Validation

Contents Assist (HTML Tags/Attributes, XML based on DTD and JSP taglib and more)

Wizards for creating HTML/JSP/XML files

Outline View

Editor Preferences

Editor Folding

Web Browser (It works as an Eclipse's editor)

Image Viewer

Tag Palette

CSS code completion and outline