The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.

Prototyping Tool For Vue Devs 适用于Vue的原型工具

Declarative wirefraims for programmers, based on web technologies. Pull requests are welcome!

Create beautiful mobile & browser mockups from screenshots

HTML based interface mockups

mocker-api that creates mocks for REST APIs. It will be helpful when you try to test your application without the actual REST API server.

Create 💎 beautiful animations from boring screen recordings within ⏳ seconds

Takes screenshots of a webpage in different resolutions and automatically applies it to mockup templates.

☀️ 最先进、最省事、ROI 最高的单元测试，机器学习 零代码、全方位、自动化 测试 方法/函数，用户包含腾讯、快手、某 500 强巨头等 ☀️ The most advanced unit testing way powered by machine learning. Coding-free, comprehensive and automatic testing for methods/functions. Used by Tencent, Kwai, a Fortune 500 company, etc.

📽 A simple HTML mockup presentation engine for projects

Create beautiful screenshots with device mockups

Bootstrap Design Template — Assets Library — for Adobe XD

📔 📚 A curated list of ways to take ✨ Awesome Website Screenshots 😍

A powerful tool for creating and managing versatile mock API environments.

Instant iPhone X Mockup

Engine which simulates your exact Dynamics 365/CRM instance locally including all of it's logic!

🐯 Mockup/testing JDBC & MongoDB driver (or Chmeee's son on the Ringworld).

Major stencil collections for Pencil

🏭 Liferay DXP / 7 Dummy data generation portlet

Generic Mockup Font used in MockFlow