Alternatives to Marvel

High-fidelity prototyping tool that simulates sensor input, IoT triggers, and complex interactions without writing code.

Low-fidelity wireframing tool that intentionally looks hand-drawn so reviewers focus on flows, not pixels.

Collaborative interface design tool

Mac-native vector design app that pioneered the modern UI workflow with symbols, shared libraries, and a deep plugin ecosystem.

Open-source design and prototyping platform built on web standards, with a self-hostable server and SVG-native files.

Free hand-drawn whiteboard with collaboration and an embeddable editor

Visual website builder that lets designers ship production-grade marketing sites with real CMS, SEO controls, and code components.