10 Tools for Rapid Prototyping
Design
6 Months Designing With Figma
Contrast
A macOS app for quick access to WCAG color contrast ratios → https://itunes.apple.com/de/app/contrast-color-accessibility/id1254981365?l=en&mt=12
Sketch vs Figma, Adobe XD, And Other UI Design Applications — Smashing Magazine
UX Design Tools for 2018
LittlePlane – Wireframe for Everyone
Flinto
App Prototyping Tools For Designers
Principle - Animated Design
Principle makes it easy to create animated and interactive user interface designs. Whether you're designing the flow of a multi-screen app, or new interactions and animations […]
Swatch you doing?
Simple color picker everyone
UX Punk - Apps With Attitude
Moqups
… is a nifty HTML5 App used to create wireframes, mockups or UI concepts, prototypes depending on how you like to call them.
Konigi
News, resources, and tools for interface designers
Mockups For Desktop
Download the desktop version of Balsamiq. Works offline, one-time purchase.
Yahoo! UI Library
Big Player opens UI Library