Pencil Project has been discontinued. Similar apps include Penpot, which is open source with a free version. Other options are Figma, LibreOffice - Draw, Open Pencil and Penpot Desktop. There's no shortage of Prototyping Tools like Pencil Project, with more than 50 alternatives for Windows, Mac, the web, Linux and iPhone.
A streamlined web app that helps you create and collaborate in real-time on wireframes, mockups, diagrams and prototypes.
Romania
EU
Axure RP is the leading tool for rapidly creating wireframes, prototypes and specifications for applications and web sites.
United States
Play empowers you to design, build and launch better mobile products, in less time, with fewer barriers - all on your mobile device.
Justinmind is the best solution to prototype any web or mobile app you can think of. You can define websites and apps for Web, iOS, and Android with our intuitive drag-and-drop interface. No code involved.
SpainEU
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. There's no other drawing software like it.
United States
Akira is a native Linux Design application built in Vala and GTK. Akira focuses on offering a modern and fast approach to UI and UX Design, mainly targeting web designers and graphic designers. The main goal is to offer a valid and professional solution for designers who want to...
ItalyEU
Mockplus is a desktop-based prototyping tool. It can be used to create wireframes/mockups/prototypes for any mobile and web apps with ease. This tool will make UI/UX designers prototype faster, smarter and easier.
China
Uizard is an AI-powered design tool released in 2018. Uizard's easy-to-use drag-and-drop editor and its AI features help users design and prototype user interfaces for web and mobile applications. Although commonly deployed as a UI design solution, Uizard's powerful AI...
DenmarkEU
MockFlow accelerates early-stage product design and ideation with AI-powered wireframing, prototyping, and visual brainstorming. WireframePro and IdeaBoard enable teams to collaboratively transform initial concepts into professional, shareable wireframes and diagrams.
India
Draw, part of the Apache OpenOffice suite, is a graphics editor that gives you the tools to communicate with visuals and diagrams. With a maximum page size of 300cm by 300cm, Draw is powerful tool for posters, graphs, charts, and more.
United States
WireframeSketcher is a software tool that helps product managers, designers and developers quickly create wireframes, mockups and prototypes for desktop, web and mobile applications. It’s standalone software and a plug-in for any Eclipse IDE.
GermanyEU
