Nibbler - Free tool for testing how good your website is, and what you can do to improve it. Check accessibility, SEO, social media, compliance and more.
Just Color Picker - Free portable colour picker and colour editor for web designers, photographers, graphic designers and digital artists. Supports Windows and macOS.
Colorific - Colorific Hair Color Salons give you amazing color at an affordable price.
Instant Eyedropper - Identifying the color code of an object on the screen is usually an involved, multistep process:...
HTML Validator - HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla.
gcolor2 - GTK+2 Color Selector