Pencil Project is described as 'Pencil is a standalone app that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features' and is a very popular UI Design tool in the photos & graphics category. There are more than 50 alternatives to Pencil Project for a variety of platforms, including Windows, Mac, Web-based, Linux and iPhone apps. The best Pencil Project alternative is Penpot, which is both free and Open Source. Other great apps like Pencil Project are Figma, LibreOffice - Draw, Sketch and Penpot Desktop.
Scapple is an easy-to-use tool for getting ideas down as quickly as possible and making connections between them. It isn’t exactly mind-mapping software—it’s more like a freeform text editor that allows you to make notes anywhere on the page and to connect them using straight...
A design tool to draw user interfaces, create interactive prototypes and make animations.
GUI Design Studio allows developers, analysts, designers, interaction specialists and business professionals to quickly create interactive prototypes without writing a single line of code.
Serena Prototype Composer - the best agile application prototyping tool is now free! View the demo, take the product tour, or download it free today.
PowerMockup is a PowerPoint add-in for sketching screens of web and desktop applications. The interface elements make it a breeze to prototype and evaluate different design ideas before proceeding to the implementation.
FlairBuilder is a user interface prototyping tool for easy authoring of interactive website wireframes, mockups and GUI prototypes.
Helix is a free AI-powered prototyping tool that turns ideas into interactive prototypes in just 3 minutes—no coding or design skills needed.
Kwippe has a curated database of over 33,000 open source and creative commons vector icons, emojis, and other graphics that can be customized in our easy to use editor and variations generator.
EaSynth ForeUI is an easy-to-use UI prototyping tool. You can use ForeUI to create skinnable prototype of software or website, and run the interactive simulation in your web browser. You can switch the UI theme of the prototype, thus the fidelity will be changed as well.
Simple vector graphics editor for creating flowcharts, UML class diagrams, illustrations and slide shows.
Diagramo is an online flowchart software
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