Alternatives to Indigo Studio for all platforms with any license

Pencil Project

Pencil is a standalone app or Firefox extension that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features. The Pencil...

Free Open Source Mac Windows Linux PortableApps.com Electron / Atom Shell ... Firefox
Firefox Extensions Prototyping Cliparts Drawing ... Firefox Extensions Sketching Wireframing Add a feature

352 Like
InVision

We believe the screen is the most important place in the world. That’s why we are dedicated to helping you deliver the best possible digital product experience, with our...

Freemium $ $ $ Web Android iPhone Android Tablet iPad
Import from Sketch Prototyping Basecamp integration Design handoff ... GitHub integration Group chat Jira integration Kanban boards Support for @mentions Real time collaboration Slack integration Trello integration Add a feature

66 Like
Balsamiq Wireframes

Balsamiq Wireframes is a rapid low-fidelity UI wireframing tool that reproduces the experience of sketching on a notepad or whiteboard, but using a computer. FEATURES...

Freemium $ $ $ Mac Windows Web
Drawing Real time collaboration Wireframing Add a feature

110 Like
Marvel

The collaborative design platform. Wireframe, prototype, design online and create design specs in one place. Or create an integration with our API.

Freemium $ $ $ Android iPhone Android Tablet iPad Apple Watch ... Apple TV Apple Messages Software as a Service (SaaS)
Prototyping Anonymous Commenting Built-in Commenting System Add a feature

24 Like
Origami Studio

Origami Studio is a free design tool built by Facebook designers for creating interactive UI prototypes. An elegant, layer-based interface allows designers to repaidly...

Free Mac Android iPhone
Prototyping Add a feature

11 Like
Wired Designer

Wired Designer is a mockup tool built using web components from the Wired Elements library. It's made by the author of Rough.js...

Free Open Source Web Self-Hosted
Prototyping Add a feature

4 Like
STUDIO

STUDIO lets you easily design & publish websites from scratch without writing any code. With the option of starting from a blank canvas, wireframe or template, you...

Freemium $ $ $ Web
Custom types builder Responsive design WYSIWYG Support Add a feature

7 Like
Phase

Design and prototype websites and apps intuitively, in a new product reworked for the digital age.

Free Mac Windows Web
Prototyping UX Design Add a feature

19 Like
MockFlow

Nothing to download/install, create and access your mockups from anywhere. Add pages with templates and define links to present a clickable prototype. Our...

Freemium Web
Real time collaboration Wireframing Add a feature

19 Like
Atomic

Work your way up from a blank canvas, or pull in designs from Photoshop or Sketch. Lay out your states and instantly animate between them, without coding a thing. Share...
- Discontinued Atomic announced the end of their prototyping tool and a new direction for Atomic
Freemium $ $ $ Web
Interactive content Add a feature

7 Like
Moqups

A streamlined web app that helps you create and collaborate in real-time on wireframes, mockups, diagrams and prototypes.

Freemium Web
Drawing Prototyping Real time collaboration SVG Editors Add a feature

72 Like
MockFlow.com

MockFlow provides a one-stop solution for all UI planning needs that includes UI design mockups, sitemap, documentation and design approvals. This service is offered by...

Commercial $ $ $ Mac Windows Web Trello Slack ... Google App Engine Microsoft Office Suite Atlassian Stash
Prototyping UX Design Wireframing Add a feature

1 Like
ProjectHuddle

Use your existing WordPress site to get feedback on your design projects. Upload your design images, wireframes, mockups, logo sketches, photography and more. Gather...

Commercial Self-Hosted Wordpress
Customizable Real time collaboration Add a feature

8 Like
Mockingbird

Mockingbird is an online tool that makes it easy for you to create, link together, preview, and share mockups of your website or application.

Commercial $ $ $ Web
No features added Add a feature

20 Like
Fluid UI

Fluid UI is the fastest mobile app prototyping tool available. Design and test your low and high fidelity app mockups on a mobile device with ease. Simple and UX...

Freemium Web
Real time collaboration Flow diagram visualisation Live Preview Prototyping ... Export to PDF User Testing Add a feature

16 Like