Free Proto.io Alternatives

The best free alternative to Proto.io is Wireflow, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Proto.io and 16 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Proto.io are InVision, mydraft.cc, Marvel and STUDIO.

Proto.io alternatives are mainly Prototyping Tools but may also be Wireframing Tools or UI Design Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Proto.io.

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Proto.io

Paid • Proprietary
Prototyping Tool
Online

Create fully-interactive high-fidelity prototypes that look and work exactly like your app should. No coding required....

Learn more about Proto.io

Wireflow
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No
Free • Open Source
Wireframing Tool
UI Design Tool
Vector Graphic App
Online
Self-Hosted
117 alternatives to Wireflow
Wireflow is free, online, real-time collaborative, open source tool for creating beautiful user flow prototypes.
Suggest and vote on features
Wireflow Features
1. Real time collaborationMultiple users can work together in Wireflow simultaneously.
2. Kanban BoardWireflow allows you to organize your workflow by moving cards with drag-and-drop functionality between multiple columns.
Flow Chart
Shared whiteboard
InVision
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Yes
No
Freemium • Proprietary
Prototyping Tool
Online
Android
iPhone
Android Tablet
iPad
99 alternatives to 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 platform and best practices from your peers.
Suggest and vote on features
InVision Features
1. Real time collaborationMultiple users can work together in InVision simultaneously.
2. Kanban BoardInVision allows you to organize your workflow by moving cards with drag-and-drop functionality between multiple columns.
3. Support for @mentionsInVision supports the use of mentions through @ to a particular user, who will be notified personally.
4. Design handoffView and share snippets of generated code and design specs from your design in InVision
Import from Sketch
GitHub integration
Trello integration
Slack integration
Basecamp integration
Jira integration
mydraft.cc
Do you think this is a good alternative?
Yes
No
Free • Open Source
Prototyping Tool
Wireframing Tool
Diagram Editor
Linux
Online
Self-Hosted
67 alternatives to mydraft.cc
Open source wireframing tool written in typescript, react and redux.
Suggest and vote on features
mydraft.cc Features
Flow Chart
Marvel
Do you think this is a good alternative?
Yes
No
Freemium • Proprietary
Prototyping Tool
Wireframing Tool
Android
iPhone
Android Tablet
iPad
Apple Watch
Apple TV
Apple Messages
Software as a Service (SaaS)
87 alternatives to Marvel
With the Marvel design platform, access all the core functionality you need to build digital products - wireframe, prototype and generate design specs in one place.
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Marvel Features
1. Anonymous CommentingMarvel allows you to comment and participate in discussions without revealing your personal information.
Built-in Commenting System
Marvel vs Proto.io opinions
pros, cons and recent comments
Guest
It´s easy and fun to use, although I still rather proto.io
Positive comment•
1
STUDIO
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Yes
No
Freemium • Proprietary
Online
77 alternatives to 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 are free to unleash your creativity.
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STUDIO Features
1. WYSIWYG SupportSTUDIO integrates a WYSIWYG editor to edit the look and content of a document, page, or file.
Custom types builder
Presentator.io
Do you think this is a good alternative?
Yes
No
Free • Open Source
Prototyping Tool
Online
Self-Hosted
Software as a Service (SaaS)
14 alternatives to Presentator.io
Presentator is a free web application that allows you to present your designs in an easy, organized and interactive way.
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Presentator.io Features
1. Real time collaborationMultiple users can work together in Presentator.io simultaneously.
UX Design
Atomic
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Yes
No
Freemium • Proprietary
Online
39 alternatives to 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 your prototypes with anyone or view on any device via a humble URL
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Atomic Features
Interactive content
Interaction
Discontinued
Atomic announced the end of their prototyping tool and a new direction for Atomic
Savahapp
Do you think this is a good alternative?
Yes
No
Freemium • Proprietary
Prototyping Tool
Mac
Windows
Online
Chrome OS
13 alternatives to Savahapp
SavahApp is a collaborative platform that streamlines feedback right to your design screen that allows designers to create high-fidelity prototypes for web and mobile apps without writing a single line of code.

Savahapp has no features, suggest some!
NinjaMock
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No
Freemium • Proprietary
UI Design Tool
Mac
Windows
Online
17 alternatives to NinjaMock
NinjaMock is the faster, better and funnier way of making mockups.
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NinjaMock Features
UX Design
Usability Testing
Website wireframing
Mockup design
Fluid UI
Do you think this is a good alternative?
Yes
No
Freemium • Proprietary
Prototyping Tool
Wireframing Tool
Online
Software as a Service (SaaS)
76 alternatives to 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 oriented, this UI tool helps unlock creativity and will save your team time and money while gathering app...
Suggest and vote on features
Fluid UI Features
1. Real time collaborationMultiple users can work together in Fluid UI simultaneously.
2. Live PreviewInstantly see what your files and documents look like as you create them.
User Testing
Usability Testing
Website wireframing
Flow diagram visualisation
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