Best Interface Design Tools in 2026

Justinmind

Justinmind suits design teams, business analysts and developers who need to prototype web or mobile interfaces and share UI assets for handoff.

Marvel suits individuals or teams creating and sharing prototypes and preparing design handoff materials.

Moqups

It suits individuals, solo professionals and teams creating interface designs, diagrams or interactive prototypes in a browser.

Fluid UI

It suits designers, developers, product managers, entrepreneurs, and others who need to communicate app ideas through interactive mockups.

ProtoPie

ProtoPie suits designers and teams creating interactive prototypes with device-specific inputs or synchronized experiences across devices.

UXPin

UXPin suits individuals and small teams needing interactive prototypes, and growing product teams that need shared access and role controls.

Penpot

Penpot suits design and development teams that want collaborative design, prototyping and code inspection.

Proto.io

Proto.io suits people or teams creating and sharing interactive prototypes for iOS, Android, and web without coding.

MockFlow

MockFlow suits individuals or teams planning visual concepts and wireframes, from personal and nonprofit users to businesses seeking collaboration and integrations.

Visily

Visily suits founders, product managers, analysts, developers, and teams needing browser-based collaborative UI design.

Pencil Project

Pencil suits people making interface mockups or diagrams who want a free desktop tool across Linux, macOS, or Windows.

Origami Studio

Origami Studio suits designers creating interactive interface prototypes with visual layouts, imported design layers, and connected behaviors.

Uizard

Uizard suits solo users through enterprise teams that need browser-based prototyping, collaboration, design systems, and developer handoff.

Wireflow

Wireflow suits teams designing user flows collaboratively in a browser.