Prototyping Open Source Projects

Penpot: The open-source design platform for Product teams that need scalable collaboration.

:art: Diagram as Code for prototyping cloud system architectures

Collection of custom elements that appear hand drawn. Great for wireframes or a fun look.

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

Design and prototype customized UI, interaction, navigation, transition and animation for App Store ready Apps in Interface Builder with IBAnimatable.

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

Emulator for rapid prototyping of Software Defined Networks

Turbulenz is a modular 3D and 2D game framework for making HTML5 powered games for browsers, desktops and mobile devices.

Get the rocks out of your socks! Assemble makes you fast at web development! Used by thousands of projects for rapid prototyping, themes, scaffolds, boilerplates, e-books, UI components, API documentation, blogs, building websites/static site generator, an alternative to Jekyll for gh-pages and more! Gulp- and grunt-friendly.

:art: React application prototyping tool for developers and designers :building_construction:

A library for prototyping realtime hand detection (bounding box), directly in the browser.

A simple Webpack + vue-loader setup for quick prototyping.

:hatching_chick: vue GUI generator

:clapper: a dev server for rapid prototyping

Turn Python scripts into handouts with Markdown and figures

DEPRECATED: Multiplatform GUI Prototyping/Wireframing

Quickly try out any Swift pod or framework in a playground

🎨 All in One Prototyping Tool For Vue Developers.

Lightweight C/C++ Extended Kalman Filter with Python for prototyping

Repository for Quokka.js questions and issues

ImagePlay is a rapid prototyping application for image processing

Fatal is a library for fast prototyping software in modern C++. It provides facilities to enhance the expressive power of C++. The library is heavily based on template meta-programming, while keeping the complexity under-the-hood.

Small-code database for non-programmers. Universal UI, simple-code logic, automatic actions, access rules, logging, API and more. Quickly create a complex internal apps using the database as an interface.

A Ruby DSL for prototyping card games.

Clank: open source prototyping framework for mobile apps

Serve is a small Rack-based web server and rapid prototyping framework for Web applications (specifically Rails apps). Serve is meant to be a lightweight version of the Views part of the Rails MVC. This makes Serve an ideal framework for prototyping Rails applications or creating simple websites. Serve has full support for Rails-style partials and layouts.

:heavy_check_mark: Mock data for your prototypes and demos. Remote deployments to Zeit now.

A fun safe language for rapid prototyping and high performance applications

An SCSS framework & UI library for Dropbox Web.

Browser-based MDX editor

NeuPy is a Tensorflow based python library for prototyping and building neural networks

React component prototyping tool that generates fully connected class component code.

Start a responsive html5 site with postcss and browser-sync

Mmock is an HTTP mocking application for testing and fast prototyping

Rapid Machine Learning Prototyping in Python

Charm: A Framework for Rapidly Prototyping Cryptosystems

Rapidly and safely prototyping your rails application

A curated list of awesome things related to Framer prototyping tool

Fire.app is a HTML prototyping tool with Sass/Compass/ERB/Haml/Slim/Markdown support

🚧 Build web pages with Vuse, the next-gen interactive page builder powered with Vue.js.

rapid prototyping with d3.js

Flexible layout tool for creating UI on any platform

Web based diagramming app that lets you build interactive diagrams and prototypes

Prototyping robots for PyBullet (F1/10 MIT Racecar, Sawyer, Baxter and Dobot arm, Boston Dynamics Atlas and Botlab environment)

A platform for packaging and launching blockchain infra. Think docker compose for blockchain

Animating grass shader for Unity

🐴🐂Visual prototyping platform for Angular 🐶🐷

Prototyping-Library providing easy access to iOS face detection features through NSNotification.

PHONK is a coding playground for new and old Android devices

IBM TJBot

Starter using Vite + Tailwind for super fast prototyping

Prototyping Tool for exporting React/Typescript Applications!

A note-taking app built with Flutter + Firebase

Operator Discretization Library https://odl.readthedocs.io/

Image registration laboratory for 2D and 3D image data

Fake JSON Server is a Fake REST API that can be used as a Back End for prototyping or as a template for a CRUD Back End.

Library to build speech synthesis systems designed for easy and fast prototyping.

Dino is a ruby gem that helps you bootstrap prototyping with an Arduino

Python functions for reading kaldi data formats. Useful for rapid prototyping with python.

lagom: A PyTorch infrastructure for rapid prototyping of reinforcement learning algorithms.