Proto.io Alternatives (January 2026)

Proto.io - Prototyping for all

Build interactive web, iOS, Android, and other low or high-fidelity prototypes right into your web browser. Drag and drop ready-to-use, easily customizable templates, UI components, icons, and more, to prototype in minutes! No coding skills required.

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FluidUI.com - Create Web and Mobile Prototypes in Minutes

https://www.fluidu

.com/

Free lifetime account. Simple to learn, quick to master. Design interactive prototypes for Android, iOS, web and desktop in minutes.

ProtoPie: High-Fidelity Prototyping for Mobile, Desktop, Web & IoT

https://protopi

.io/

Create interactive, realistic prototypes that work like the actual digital product. Ideal for designers prototyping for mobile, desktop, web, or IoT. Try for free.

Free prototyping tool for web & mobile apps - Justinmind

https://www.justinmin

.com/

Easily create web and mobile app prototypes and wireframes with Justinmind UI prototyping tool. It's FREE. Start prototyping now!

Mockplus - Design, Prototype & Collaborate Better and Faster

https://www.mockplu

.com/

Empower your UI/UX design team with top prototyping solutions. Create interactive web or app wireframes and prototypes without any coding skills.

UXPin | UI Design and Prototyping Tool

https://www.uxpi

.com/

Design tool like no other. Prototypes that feel real, with powers of code components, logic, states, and design systems. Join for free!

Online Mockup, Wireframe & UI Prototyping Tool · Moqups

https://moqup

.com/

Moqups is a streamlined and intuitive web app that helps you create and collaborate on wireframes, mockups, diagrams and prototypes — for any type of project.

Axure RP - UX Prototypes, Specifications, and Diagrams in One Tool

https://www.axur

.com/

All-in-one software design tool for creating prototypes, specifications, and diagrams

Draftbit - Visually build native mobile apps

http://draftbi

.com/

Create, customize, and launch mobile apps all from your browser. Source code included.

MockFlow - Online Wireframing and Product Design Tool

https://mockflo

.com/

MockFlow is an intuitive web app to simplify your product design process. A quick way to create and collaborate on wireframes for web, mobile, and desktop apps.