Alternatives to Prototype Composer 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
Cliparts Firefox extension Wireframing Add a feature

329 Like
Lucidchart

Online diagram and flowchart software that supports Microsoft Visio import and can work on any operating system.

Freemium $ $ $ Web Android iPhone Chrome OS Microsoft Office Word ... Google Drive Google Drive - Docs Google Apps Google Drive - Sheets Microsoft Office Suite
Real time collaboration Team Collaboration General-purpose diagramming Real time collaboration ... Export to PDF Sequence Diagrams Wireframing Add a feature

487 Like
Balsamiq Mockups

Using Balsamiq Mockups feels like you are drawing, but its digital, so you can tweak and rearrange controls easily, and the end result is much cleaner. Teams can come up...

Commercial $ $ $ Mac Windows Web
Real time collaboration Add a feature

102 Like
InVision

InVision's prototype tool lets you create interactive wireframes and high-fidelity prototypes. Share your work and get instant feedback right on-screen.

Freemium Web
Import from Sketch Basecamp integration GitHub integration Group chat ... Jira integration Kanban boards Support for @mentions Real time collaboration Slack integration Trello integration Add a feature

60 Like
OmniGraffle

OmniGraffle can help you make eye-popping graphic documents—quickly—by providing powerful styling tools, keeping lines connected to shapes even when they’re moved, and...

Commercial Mac iPad
No features added Add a feature

169 Like
Axure RP

Axure RP is the leading tool for rapidly creating wireframes, prototypes and specifications for applications and web sites.

Commercial Mac Windows
No features added Add a feature

34 Like
Edraw Max

Creating flowcharts, organizational charts, business diagrams, science illustration, network diagrams, mind map and lots more. Free Examples Download.

Commercial Mac Windows Linux
Real time collaboration Export to PDF Add a feature

35 Like
Marvel

Marvel is a free prototyping tool that transforms static design files (like Photoshop files, PNG etc) and sketches into interactive, sharable prototypes that look and...

Freemium Web Android iPhone Apple Watch tvOS
Anonymous Commenting Built-in Commenting System Add a feature

21 Like
Gliffy

"If they could see what Im thinking, they'd get it!" People just understand faster with pictures. It helps them see how information is connected, whether...

Commercial Web Chrome OS
No features added Add a feature

46 Like
Diagramo

Diagramo is an online flowchart software - diagrams (create, edit and share) - organization charts (create, edit and share) - network diagrams (create, edit and...

Free Open Source Web
Export to PNG Add a feature

15 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
No features added Add a feature

10 Like
SmartDraw

Instead of starting with a blank screen, SmartDraw gives you the exact template you need. Then use simple commands to add your information and SmartDraw does the rest....

Commercial $ $ $ Mac Windows Web
No features added Add a feature

33 Like
Concept.ly

Free web and mobile mockup tool. Transform your design and mockups into clickable interactive applications. Perfect way to validate ideas faster with lean startup...

Freemium Web
Customer feedback Real time collaboration Add a feature

35 Like
UXPin

UXPin is a web-based system for managing design documents like wireframes, sitemaps, persona descriptions or flowcharts. It lets you upload image files, invite teammates...

Commercial Mac Windows Linux Web
Wireframing Add a feature

28 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 Add a feature

17 Like