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Patterninja

Create patterns online

15 Alternatives To Patterninja

Adaptive Backgrounds

Extract dominant colours from images
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CodePen

A front end web development playground.

CodePen Patterns

A collection of design patterns & code for your project

CodePen Projects

A web based IDE for building websites by CodePen

CodeSandbox

Online playground for React

Hero Patterns

A collection of repeatable SVG background patterns
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Lisbon Azulejos

Collection of Lisbon walls patterns for designers

Novapattern

Curated directory of well-designed patterns to download

Pattern Cooler

Browse, edit and download seamless background patterns

Plunker

Plunker is an online community for creating, collaborating on and sharing your web development ideas.

Swift Playgrounds

Learn serious code on your iPad in a seriously fun way

Swifty

Learn to code in Swift on iPhone & iPad

UI Patterns

Level up with interactive mobile design patterns
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Web Dev Education Platform

Build, share, learn, and thrive in front-end development

iWantHue

Colors for data scientists. Generate and refine palettes of optimally distinct colors.