Penpot is described as 'The open-source design platform for teams that design, build, and scale digital products' and is a very popular UI Design tool in the photos & graphics category. There are more than 50 alternatives to Penpot for a variety of platforms, including Web-based, Mac, Windows, Linux and iPhone apps. The best Penpot alternative is Affinity, which is free. Other great apps like Penpot are Canva, Figma, Pencil Project and Open Pencil.
Low-fidelity UI wireframing tool simulating sketching experience, optimized for speed with Quick Add, built for collaboration, drag-n-drop simplicity, exportable wireframes to PNG/PDF, interactive prototypes via linking, hundreds of UI components, reusable symbols, and more.
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.
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 magically organizing diagrams with just one click.
A streamlined web app that helps you create and collaborate in real-time on wireframes, mockups, diagrams and prototypes.
Axure RP is the leading tool for rapidly creating wireframes, prototypes and specifications for applications and web sites.
Aktivisda is a web application to facilitate the creation of visuals that use the graphic charter of an organization, and the spreading of this graphic charter.
Play empowers you to design, build and launch better mobile products, in less time, with fewer barriers - all on your mobile device.
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...
Pixso is the best collaboration tool that enables you to make great products as a team. You can prototype, design, and deliver code with Pixso.
ProtoPie is the easiest tool used to turn your UI/UX design ideas into highly interactive prototypes for mobile, desktop, web, all the way to IoT.
The world’s most powerful screen design tool. Rapid prototyping, animation, built-in design systems, and collaboration—all in one place.
Revolutionize your development process by bridging the gap between designers and developers to turn your design visions into production-ready UIs.
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Penpot and Balsamiq are focussed on UX work, but where Balsamiq is for rough, whick mockups, Penpot is focused on spec ready UI design.