Pencil is a standalone app that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features.
Cost / License
- Free
- Open Source (GPL-2.0)
Application types
Alerts
- Discontinued
Platforms
- Mac
- Windows
- Linux
- PortableApps.com




Balsamiq Wireframes is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is Pencil Project, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Balsamiq Wireframes and 18 are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Balsamiq Wireframes are Open Pencil, Penpot Desktop, Whimsical and Frame0.
Pencil is a standalone app that lets you create diagrams or UI mockups. It doesn't have collaboration/multi-user features.




Open-source design editor for vector and interface projects featuring AI-powered generation, .fig and .pen file support, design-to-code export, real-time P2P collaboration, linting, tokens, advanced programmability, Vue SDK, and privacy-friendly operation.

Penpot Desktop is an unofficial desktop application for the open-source design tool, Penpot.



Whimsical is a collaborative visual workspace for creating flowcharts, wireframes, virtual sticky notes, and more!.








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 to review and comment on them, and keep track of revisions.



Revolutionize your development process by bridging the gap between designers and developers to turn your design visions into production-ready UIs.




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.




Quant-UX is an integrated Prototyping and Analytics software. It allows you to design, test and analyze interaction prototypes.




HotGloo is a UX, wireframe and prototyping tool designed to build wireframes for web, mobile and wearables. Create and share fully interactive prototypes with your team and clients and gather feedback on the process.



Online tool for creating mockups in the browser. Use your browser’s save function to save the file (just html for view only, complete save for an editable version) or export to codepen for others to view.

Mockitt is an online prototyping and collaboration tool to empower your design journey, present your idea, validate your concept and implement the design. You can use Mockitt to quickly create a prototype that illustrate your ideas and enhance clients’ experience with plentiful...


It's ok as an alternative, but it fails in creating interactive wireframes