CSSED - If you have experience with TopStyle for windows and you are searching for a similar software for...
Stylizer - A productivity-focused real-time CSS editor for serious web developers. Mac OS X and Windows.
EnjoyCSS - CSS generator for rich graphical styles without coding
CSSEdit - Design beautiful, innovative and fast-loading web sites… with a beautiful, innovative and fast app.
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.
Style Master - CSS Editor with WYSIWYG editing, Wizards and hand coding tools for Windows and Mac OS X