Prototype is a preliminary model for a specific product that helps to determine its functionality.
Online Prototyping Tool allows web designer to create and test the website through feedback from the users.
Low Fidelity (Lo-fi) Prototype is a static prototype that shows how components will be placed on a screen.
High Fidelity (Hi-fi) Prototype is an interactive prototype wherein the usability of the website are created and tested along with the visual features.
Mockflow is a cloud-based platform that enables web designers to collaborate in creating a wireframe prototype.
Draftium is a free online tool with pre-builttemplates and quick creation or customization of the prototype.
Adobe XD is an online vector-based tool to create prototypes for websites and apps.
InVision is an online tool for creating and collaborating interactive prototypes.