Full featured drawing program, easy to use and very powerful.

Pick a color and it shows info and related colors.

One of the best all CSS button makers.
CSS buttons don't use an image they are pure code.

Makes a moving screen background from 2 or more colors.

Tests custom timing curves for your animations

Explore basic css effects.

Converts most any video format to MP4, does really good file compression.

Brightness, Invert, Hue-rotate and many more.