Open-source wireframe kit with 150+ components and 50+ ready-made mobile screens

Contra Wireframe Kit is a free, open-source collection of UI building blocks designed for rapid prototyping. It offers over 150 mobile components and more than 50 ready-to-use screens, all organized with a comprehensive style guide. Compatible with Figma, Sketch, Adobe XD and InVision Studio, the kit lets designers quickly assemble wireframes, customize elements, and export assets for commercial or personal projects under a CC0 license.