Prototyping is one way to see and test your website before you spend long nights coding and programming. Although the website design process and mockup tools tends to be relatively fluid, the prototyping phase typically focuses on Visual Layout, Interface Element Design, Logical Flow, Behavior. Here are prototyping tools range in their level of interactivity from slightly more than a wireframe tool to almost fully interactive prototype builders.

Framer

Framer is a modern prototyping tool. It can help you to quickly build and test complex interactions and rich animations for both desktop and mobile.

POP

POP turns hand-drawn wireframes to interactive prototypes. Sketch the app on paper; take pictures and add hotspots to link them together; simulate on iPhone and share it online to get feedbacks.

mokk.me

Easily create mobile web app mocks you can share, test on multiple platforms, and use in production.

moqups

The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project.

uxpin

UXPin just made it a little easier for you to paper prototype. They’ve created a kit with sticky note interface elements (buttons, combo-boxes, check-boxes etc. – 50 each), universal elements (to easily make menus, lists, boxes – 50 each) and a 50 page paper browser notepad packaged in a hard cover case.

FieldTest

FieldTest is a browser-based tool that helps turn your ideas for mobile applications and websites into interactive prototypes.

proto.io

Build high-fidelity fully interactive mobile app prototypes in minutes. Prototypes can be viewed on browser or device giving a real experience to the user how the app will look like and behave. Multiple devices like smart phones and tablets/pads are supported including iPhone, iPad and Android devices.

mockapp

MockApp is a mobile prototyping tool where you build prototypes in Keynote or Powerpoint.

invisionapp

InVision lets you transform your designs into beautiful, interactive web & mobile mockups and protoypes!

Keynotopia

Keynotopia transforms your favorite presentation application into the best rapid prototyping tool for creating mobile, web and desktop app mockups.

easel.io

Easel is an in-browser, high-fidelity web design tool aimed at designers and developers on small teams. Design with real web elements, even twitter bootstrap.

Codiqa

The fastest mobile builder and prototyping tool. Drag-and-drop to a live app, share it with others, and build off our high quality and clean code. Perfect for apps or websites.