Top 10 Open Source Alternatives to Moqups in 2025: A Comprehensive Comparison

Moqups has long been a popular tool for wireframing, prototyping, and mockups, but the open-source community has developed several competitive alternatives that are gaining traction in 2025. These tools offer various features, benefits, and free usage plans, catering to different needs and preferences. This article lists the top 10 open-source alternatives to Moqups, comparing their key features, data points, and links for more information.

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1. Pencil Project

Description: A free, open-source GUI prototyping tool for creating mockups and wireframes across various platforms.
Key Features:
Cross-platform compatibility (Windows, macOS, Linux).
Extensive library of built-in shapes and stencils.
Support for diagramming and flowcharts.
Ability to link pages for simulating user flows.
Available as a Firefox add-on.
Data Points:
Open Source: Yes
Platforms: Windows, macOS, Linux, Firefox
Free: Yes
Primary Use: GUI Prototyping
Strengths: Easy to use, great for beginners, many templates available. Learn more about Pencil Project

2. Penpot

Description: An open-source design and prototyping platform focused on team collaboration.
Key Features:
Web-based and cross-platform.
Tools for pixel-perfect UIs and interactive prototypes.
Designed for entire product teams.
Self-hostable.
Real-time collaboration.
Data Points:
Open Source: Yes
Platforms: Web-based, Cross-Platform
Free: Yes
Primary Use: Design and Prototyping
Strengths: Collaboration features, integrates well with development. Explore Penpot

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3. Draw.io (now diagrams.net)

Description: A free, open-source, browser-based diagramming application that can be used for wireframing, flowcharts, and more.
Key Features:
Browser-based, no account required.
Wide variety of shapes and templates.
Can save files locally or to various cloud storage services.
Real-time collaboration.
Can be used to create diagrams, flowcharts, and mockups.
Data Points:
Open Source: Yes
Platforms: Browser-based
Free: Yes
Primary Use: Diagramming
Strengths: Easy to use, great for quick diagrams, and versatile. Learn more about Draw.io (diagrams.net)

4. Origami Studio

Description: A free, open-source prototyping tool from Facebook for creating iOS and Android prototypes with advanced interactions.
Key Features:
Focus on interactive prototypes for mobile.
Built on top of Facebook's Origami framework.
Ready-to-use patches for custom prototypes.
Supports real-time data integration.
Leverages native hardware APIs.
Data Points:
Open Source: Yes
Platforms: macOS (primarily for mobile prototyping)
Free: Yes
Primary Use: Mobile Prototyping
Strengths: High-fidelity interactions, live data, native APIs.

5. Avocado

Description: An open-source interaction design toolbox built by IDEO, enabling designers to create interactive prototypes without coding.
Key Features:
Built on top of Facebook's Origami framework.
Utilizes pre-built patches.
Designed for quick interactive prototyping.
User-friendly for designers.
Customizable.
Data Points:
Open Source: Yes
Platforms: macOS (based on Origami)
Free: Yes
Primary Use: Interactive Prototyping
Strengths: No-code prototyping, speed, customizability. Discover Avocado

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6. Wireframe.cc

Description: A minimalist, browser-based tool for creating simple wireframes quickly.
Key Features:
Simple and focused interface.
Designed for rapid low-fidelity wireframing.
Browser-based, no account needed.
Easy to share.
Ideal for quick brainstorming.
Data Points:
Open Source: No (but free for basic use)
Platforms: Browser-based
Free: Yes (basic version)
Primary Use: Low-fidelity Wireframing
Strengths: Simplicity, speed, no account required. Learn more about Wireframe.cc

7. Miro

Description: An online collaborative whiteboard platform that can be used for wireframing, brainstorming, and more.
Key Features:
Real-time collaboration.
Templates for wireframing and design.
AI-powered features.
Integration with other tools.
Versatile for various project types.
Data Points:
Open Source: No (but offers a free plan)
Platforms: Web-based
Free: Yes (limited free plan)
Primary Use: Collaboration, Design
Strengths: Collaboration, versatility, AI features. Explore Miro

8. MockFlow

Description: A collaborative platform for UI design, wireframing, and prototyping.
Key Features:
Templates and presets to speed up the process.
Integrates with Slack, Google Workspace, JIRA, Trello, Microsoft Teams, and more.
Free for one user managing one project of up to three pages.
Collaborative design.
HTML generation for developers.
Data Points:
Open Source: No (but offers a free plan)
Platforms: Web-based
Free: Yes (limited free plan)
Primary Use: UI design, wireframing.
Strengths: Speed, Collaboration, Integrations. Discover MockFlow

9. Wirefy

Description: A tool for building functional wireframes.
Key Features:
Focused on functional wireframes.
Designed for speed.
User-friendly.
Data Points:
Open Source: No (but free to use)
Platforms: Not specified, typically web-based.
Free: Yes
Primary Use: Wireframing
Strengths: Fast and easy to use.

10. Figma

Description: A powerful, web-based design tool that can be used for wireframing, prototyping, and UI design. While not entirely open-source, it has a very generous free tier.
Key Features:
Real-time collaboration.
Vector design tools.
Component libraries.
Prototyping features.
Large and active community.
Data Points:
Open Source: No (but has a free tier)
Platforms: Web-based
Free: Yes (limited free plan)
Primary Use: UI/UX design.
Strengths: Collaborative, feature-rich, versatile. Learn more about Figma

These are some of the top open-source and free tools you might consider as an alternative to Moqups in 2025. Each tool has its strengths and can be evaluated based on specific requirements and team needs.

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FAQ

1. What is Pencil Project?

Pencil Project is a free, open-source GUI prototyping tool for creating mockups and wireframes across various platforms. Discover Pencil Project

2. How does Penpot support team collaboration?

Penpot is an open-source design and prototyping platform focused on team collaboration, offering real-time collaboration features. Explore Penpot

3. Can Draw.io be used for wireframing?

Yes, Draw.io (now diagrams.net) is a free, open-source browser-based diagramming application that can be used for wireframing, flowcharts, and more. Check out Draw.io

4. What platform is Origami Studio available on?

Origami Studio is primarily available on macOS (primarily for mobile prototyping) and is built on top of Facebook's Origami framework.

5. What is Avocado and how is it used?

Avocado is an open-source interaction design toolbox built by IDEO, enabling designers to create interactive prototypes without coding. Learn about Avocado

6. What makes Wireframe.cc unique?

Wireframe.cc is a minimalist, browser-based tool for creating simple wireframes quickly, ideal for rapid low-fidelity wireframing. Discover Wireframe.cc

7. How can Miro be used for design and wireframing?

Miro is an online collaborative whiteboard platform that offers templates for wireframing, brainstorming, and more. Explore Miro

8. What are the integration capabilities of MockFlow?

MockFlow integrates with Slack, Google Workspace, JIRA, Trello, Microsoft Teams, and more, making it a collaborative platform for UI design, wireframing, and prototyping. Check out MockFlow

9. Is Wirefy easy to use for wireframing?

Yes, Wirefy is designed to be user-friendly and focuses on building functional and speedy wireframes.

10. What features does Figma offer?

Figma offers real-time collaboration, vector design tools, component libraries, and prototyping features, making it a powerful web-based design tool. Learn about Figma

About the Author

Violetta Bonenkamp, also known as MeanCEO, is an experienced startup founder with an impressive educational background including an MBA and four other higher education degrees. She has over 20 years of work experience across multiple countries, including 5 years as a solopreneur and serial entrepreneur. She’s been living, studying and working in many countries around the globe and her extensive multicultural experience has influenced her immensely.

Violetta is a true multiple specialist who has built expertise in Linguistics, Education, Business Management, Blockchain, Entrepreneurship, Intellectual Property, Game Design, AI, SEO, Digital Marketing, cyber security and zero code automations. Her extensive educational journey includes a Master of Arts in Linguistics and Education, an Advanced Master in Linguistics from Belgium (2006-2007), an MBA from Blekinge Institute of Technology in Sweden (2006-2008), and an Erasmus Mundus joint program European Master of Higher Education from universities in Norway, Finland, and Portugal (2009).

She is the founder of Fe/male Switch, a startup game that encourages women to enter STEM fields, and also leads CADChain, and multiple other projects like the Directory of 1,000 Startup Cities with a proprietary MeanCEO Index that ranks cities for female entrepreneurs. Violetta created the "gamepreneurship" methodology, which forms the scientific basis of her startup game. She also builds a lot of SEO tools for startups. Her achievements include being named one of the top 100 women in Europe by EU Startups in 2022 and being nominated for Impact Person of the year at the Dutch Blockchain Week. She is an author with Sifted and a speaker at different Universities. Recently she published a book on Startup Idea Validation the right way: from zero to first customers and beyond and launched a Directory of 1,500+ websites for startups to list themselves in order to gain traction and build backlinks.

For the past several years Violetta has been living between the Netherlands and Malta, while also regularly traveling to different destinations around the globe, usually due to her entrepreneurial activities. This has led her to start writing about different locations and amenities from the POV of an entrepreneur. Here’s her recent article about the best hotels in Italy to work from.

About the Publication

Fe/male Switch is an innovative startup platform designed to empower women entrepreneurs through an immersive, game-like experience. Founded in 2020 during the pandemic "without any funding and without any code," this non-profit initiative has evolved into a comprehensive educational tool for aspiring female entrepreneurs.The platform was co-founded by Violetta Shishkina-Bonenkamp, who serves as CEO and one of the lead authors of the Startup News branch.

Mission and Purpose

Fe/male Switch Foundation was created to address the gender gap in the tech and entrepreneurship space. The platform aims to skill-up future female tech leaders and empower them to create resilient and innovative tech startups through what they call "gamepreneurship". By putting players in a virtual startup village where they must survive and thrive, the startup game allows women to test their entrepreneurial abilities without financial risk.

Key Features

The platform offers a unique blend of news, resources,learning, networking, and practical application within a supportive, female-focused environment:

Skill Lab: Micro-modules covering essential startup skills
Virtual Startup Building: Create or join startups and tackle real-world challenges
AI Co-founder (PlayPal): Guides users through the startup process
SANDBOX: A testing environment for idea validation before launch
Wellness Integration: Virtual activities to balance work and self-care
Marketplace: Buy or sell expert sessions and tutorials

Impact and Growth

Since its inception, Fe/male Switch has shown impressive growth:

3,000+ female entrepreneurs in the community
100+ startup tools built
5,000+ pieces of articles and news written

Partnerships

Fe/male Switch has formed strategic partnerships to enhance its offerings. In January 2022, it teamed up with global website builder Tilda to provide free access to website building tools and mentorship services for Fe/male Switch participants.

Recognition

Fe/male Switch has received media attention for its innovative approach to closing the gender gap in tech entrepreneurship. The platform has been featured in various publications highlighting its unique "play to learn and earn" model.