MacRabbit

DeskShade Plus

Free

Hide icons, lock desktop and add movies as an animated desktop picture.

Slicy

Trial version

To export PSD elements as assets for your website or app, rename your layer groups once and let Slicy do everything else.

Espresso

Trial version

Develop your web projects with with HTML, CSS, XML, JavaScript, PHP support.

CSSEdit

Trial version

Edit cascading style sheets (CSS).