MockoonMockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
OdlOperator Discretization Library https://odlgroup.github.io/odl/
MotorheadA Rails Engine framework that helps safe and rapid feature prototyping
Baumeister👷 The aim of this project is to help you to build your things. From Bootstrap themes over static websites to single page applications.
HandoutTurn Python scripts into handouts with Markdown and figures
PencilDEPRECATED: Multiplatform GUI Prototyping/Wireframing
SketchizeSketchize is built for UI/UX Designers to help them design lovely apps for mobile, tablet, and desktop devices.
Mag.jsMagJS - Modular Application Glue
RbbjsonFlexible JSON traversal for rapid prototyping.
Puzzle PublisherA Sketch plugin that exports Sketch artboards into clickable HTML file and publishes it on an external site.
TestdriveQuickly try out any Swift pod or framework in a playground
InvoltInject hardware interactions directly into HTML layout.
GuifyA simple GUI for inspecting and changing JavaScript variables
GotchaTurn your Framer prototype into its own live developer spec.
Reactype🧪 Prototyping Tool for exporting React/Typescript Applications!
IbanimatableDesign and prototype customized UI, interaction, navigation, transition and animation for App Store ready Apps in Interface Builder with IBAnimatable.
Wired ElementsCollection of custom elements that appear hand drawn. Great for wireframes or a fun look.
Bootstrap XdBootstrap Design Template — Assets Library — for Adobe XD
Pela Blocks3D printed, LEGO-compatible parametric rapid prototyping, robots and enclosures
PencilThe Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.
SublimateSublimate: Ridiculously fast full stack Swift prototyping with Vapor and Sourcery.
Fake AuthA fake auth service for prototyping authentication flows
Fast prototypeThis is a machine learning framework that enables developers to iterate fast over different ML architecture designs.
RedminA super lightweight reddit client for iOS
SquibA Ruby DSL for prototyping card games.
PuppyStarter kit and delivery system for building static prototypes with Twig
Atmo✔️ Mock data for your prototypes and demos. Remote deployments to Zeit now.
Ok MdxBrowser-based MDX editor
MmockMmock is an HTTP mocking application for testing and fast prototyping
Vuse🚧 Build web pages with Vuse, the next-gen interactive page builder powered with Vue.js.
PenpotPenpot - The Open-Source design & prototyping platform
CharmCharm: A Framework for Rapidly Prototyping Cryptosystems
PhonkPHONK is a self-contained creative scripting toolbox for new and old Android Devices
React Proto🎨 React application prototyping tool for developers and designers 🏗️
Laravel SketchpadAn innovative front-end environment for interactive Laravel development
Dotnet Fake Json ServerFake 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.
saas-starterEverything you need to get your next Unicorn-For-X startup off the ground.
kdk fill it upUse Fill It Up in WordPress to mass generate content & users.
userscript-proxyHTTP proxy to inject scripts and stylesheets into existing sites.
cvlabCV Lab - Computer Vision Laboratory - a rapid prototyping tool for computer vision algorithms
ufwA minimalist framework for rapid server side applications prototyping in C++ with dependency injection support.
chatengine💬🛵 Engine to quickly prototype chat applications in javascript
iluaPortable Lua kernel for Jupyter
ventVent is a light-weight platform built to automate network collection and analysis pipelines using a flexible set of popular open source tools and technologies. Vent is python-based, extensible, leverages docker containers, and provides both an API and CLI.
switchyardSwitchyard is a Python 3-based framework for building networked system software.