Reverse Dictionary - Describe a concept and get back a list of words
Stylizer - A productivity-focused real-time CSS editor for serious web developers. Mac OS X and Windows.
Dictionary Anywhere - Dictionary Anywhere is an open-source and easy-to-use browser extension for Mozilla Firefox and Google Chrome that allows you to check definitions easily while browsing the web.
EnjoyCSS - CSS generator for rich graphical styles without coding
Writefull Thesaurus - A Google Docs add-on that uses AI to give you synonyms
Rapid CSS Editor - Rapid CSS editor is quick, powerful and easy to use HTML and CSS code editor for web developers. Intuitive interface and intelligent features help you become more productive and create modern HTML5 and CSS3 based websites faster and easier.