Best Free Diagram Software of 2025

Miro helps you keep your team's minds in sync. Miro is a virtual whiteboard and remote collaboration tool that helps cross-functional teams collaborate more effectively to create great things. Miro isn't a video conferencing tool, and Miro doesn't try to be. Miro's goal is to provide a platform for teams who work most effectively across areas, geographies, timezones to get more out of their ideas when they can't all be in the office together at the same time. It includes over 200 pre-made templates to capture and visualize ideas, collaboration tools like comments, chat screen sharing and video chat and integrations with popular business tools. Miro AI is your team's ultimate boost, empowering you to unleash your creativity and productivity like never before. We are your launchpad to the future, providing the assistance you need to bring your next big idea to life. Let Miro AI help you unlock the full potential of your team's innovation and collaboration capabilities.

Backlog is a collaboration and project management tool that teams can use to increase productivity, visibility, and simplify project tracking. To release high-quality projects faster, development teams can collaborate with IT, Marketing, and Design. The core features include Gantt Charts and Burndown Charts as well as Issues, Subtaskings, Watchlists, Comment threads. Version control, File sharing, Wikis and Bug Tracking are all part of the core. You can update your projects anywhere with the iOS and Android apps.

draw.io is a versatile diagramming tool that helps users create a variety of visual documents, including flowcharts, UML diagrams, and network designs. It integrates effortlessly with cloud services like Google Drive, GitHub, and OneDrive, making it ideal for both solo and team collaboration. The platform offers robust privacy and security features, letting users choose to save their diagrams either locally or in the cloud. With its user-friendly interface and powerful features, draw.io is perfect for both beginners and professionals in need of diagramming solutions.

Cacoo by Nulab, an online diagram software, is trusted by over 2 million users. Cacoo allows modern teams to create wireframes and flowcharts, organization charts and mind maps. This facilitates collaboration and productivity. Integrations are available with top apps like Dropbox, Google Drive and Confluence.

Napkin transforms your text into visuals, so you can quickly and effectively share your ideas. Napkin doesn't need prompts, it works directly from the text. Napkin will generate the most relevant visuals from your text. You can then choose the one that best reflects what you want to say. Napkin visuals can be fully edited, so you are able to adjust the content and style of your images. You can add or swap icons in our extensive database. Accentuate style with these smart and versatile connectors. Connectors that are dynamic and can connect to anything. Colors that look great in both light and dark modes. Visuals created with Napkin can easily be used anywhere. Auto-generated infographics and diagrams will engage your audience. Napkin transforms your existing text into visuals such as diagrams, charts and scenes. Imagine having a personal expert at your fingertips to bring your ideas into life.

You can quickly draw diagrams by simply typing. You can quickly draw schemas by using the keyboard. Only provide the details that you need. Capture ideas quickly. GUI tools shouldn't interrupt your flow. Beautiful diagrams can make your documents look professional and help you communicate clearly. You can share your diagrams online.

ERD Lab is an online ER Diagram Tool which allows you to visually design your database. You can import existing SQL or create a new database without writing any code. Visualize your schemas and collaborate with your team. When you are done, export SQL or PDF/Image. All this for free!

Pencil is an open-source user interface drafting tool. Evolus uses Mozilla's technologies to create it. This tool allows analysts and developers of application interfaces to quickly create application interfaces for customers to communicate with them. application development. Evolus is proud to be a part of the Pencil tool-building project. Pencil is now available as an open-source tool (GPL License) so that anyone can access the source code to modify and upgrade. . Pencil can either be used as an add-on for Mozilla Firefox 3 or as a standalone program. Pencil can be used on any platform Mozilla Firefox 3 supports.

Samepage, an award-winning collaboration software for teams, allows you to collaborate with your team and get more done. Sampage allows teams of any size to benefit from a variety of online collaboration tools, including video conferencing, task management and file sharing. It integrates with top business apps, which helps users consolidate workflows.

Where teams collaborate to design. Figma allows teams to create, test and ship better designs from beginning to end. Your work will be fast and powerful. Figma is packed with design tools you already love and unique inventions such as the Arc tool or Vector Networks. Figma keeps your ideas flowing. You don't need to stop to save, export, or install. It's what cloud software should do. Animated prototypes make your ideas come to life faster and feel just like the real thing. Get feedback from users and test your ideas earlier and more often. You can share a link to your prototypes or design files and get feedback from others. You can also jump into the same file as your colleagues, no matter where you are located in the world, and co-edit it live. You can create a scalable design system that is easy to manage and accessible for your company. If all designers speak the same language, everyone is more empowered to do their best work.

Lucidchart is an online diagram tool that allows you to create and share professional diagrams. We support all aspects of communication and collaboration, from system design to brainstorming to project management. Lucidchart is loved by millions.

A whiteboard online for teams to collaborate. Ideate, share, discover. Create and riff together. Sticky notes can help you communicate more ideas. Use sticky notes to vote, stamp, emote and draw or chat to interact with soul. Connectors, shapes, markers and markers can help you organize your thoughts and show how they interact. Connectors that snap to the grid and shapes that are out of the box can be used to document journeys and systems. FigJam is easy to learn and intuitive to use. It keeps your team jamming and moving. Figma and FigJam can live side-by side, so you can find all design work, including ideation and execution, in one place. To create consistent artifacts, teammates can use FigJam's design libraries. You can express yourself quickly without cluttering up your FigJam workspace. Stamps can be used to vote for ideas, send love, or note where further action is needed. Cursor chat allows you to quickly share your thoughts while jamming live. You can customize your work by using either default library assets or your custom components.

Make shapes and diagrams. Easy-to-create charts and diagrams can add color to documents, presentations, websites, and other media. It's easy to do it all. You can easily create charts, layout diagrams, and flow charts. Then, you can add them to other documents, or embed them on a site. Comment? Comment on a shape box or text box to add context to your discussion. You can send an email notification by adding another person to a comment. Access anywhere, anytime. All your drawings are automatically saved to Google Drive. You can access them from anywhere, on any device.

Create flow charts, mind maps, org charts and network diagrams with rich gallery of templates and examples. Edraw Max is a powerful, all-in-one diagramming program that can be used for all purposes. Edraw Max can help you draw flowcharts and fishbone diagrams, UML maps, floor plans, office layouts, and UML diagrams. It is also very affordable. Templates let you go fast. You can get inspired and begin your design quickly with thousands of professionally designed templates. You can import Visio files and export your drawings to a variety familiar file formats such as Visio. Edraw Max can create more than 280 types of diagrams in a matter of minutes, including technical and attractive infographics. This leaves Visio behind.

Creately, a versatile visual collaboration platform, streamlines the journey from ideation to execution within a shared visual space. Offering a rich collection of 10,000+ templates, teams can visually integrate ideas into diverse frameworks, map processes, or delineate entire organizational structures. Initially fostering innovation and big-picture thinking, Creately transforms into the definitive project and team hub over time, functioning as a Visual Database. Users can enrich visual content with notes, attachments, and linked data, consolidating crucial information within Creately. Creately ensures data coherence by automatically updating linked information across the platform, establishing itself as the singular source of truth for projects and teams. Ideal for hyper-collaborative meetings, workshops, brainstorming sessions, process mapping, technical designs, and agile project planning, Creately stands out as an indispensable tool for teams navigating collaborative complexities.

Venngage is the easy design platform that brings dull data, dry documents and complex information to life. Access a library of engaging visual communication templates, created by our expert in-house designers, to create powerful visuals. You don’t need any design experience! With our simple drag and drop editor, video tutorials and courses, videos and courses, you’ll be creating stunning designs in minutes. Venngage has a wide range of templates perfect for business and professional communications including infographics, charts, reports, diagrams, mind maps, presentations, and more so that you can impress your boss, your clients, prospects and online audience.

JointJS+ is a diagramming toolkit, a commercial extension of JointJS, that allows developers and companies of any size to create advanced Low-Code/No-Code and visual applications. Developers can utilize pre-built UI plugins to build custom applications, customize user interfaces and embed elements according to their requirements. Businesses can utilize JointJS+ to integrate interface with workflow systems, build business process management, diagramming, and project management applications, and more. It provides a programmer’s kit, which allows users to undo or redo changes, conduct graph manipulation, and validate data. Other features include custom shapes, JSON import/export, interactive diagrams, read-only view, automatic layouts, inline text editor, path editor, zoom, charts, and more. Start a risk-free 30-day trial to experience the power and flexibility of JointJS+.

ClickCharts makes it easy to create flowcharts or diagrams with this software. Create powerful visuals of your organization, process, mindmap, UML diagram, and other details quickly. Your data flow and value streams can be mapped. Find bottlenecks and ways to improve productivity. You can either jump start the process using template options or you can start from scratch with your choice shapes, symbols, line connectors, and more. Export to jpg and gif or png, and many other formats.

Create complex diagrams using markdown code and collaborate in real-time with your team. Text-based diagramming simplifies documentation processes and improves workflows. You can create projects with the Teams feature and invite members. This allows sharing across your organization, ensuring a single source for truth and improving productivity. Mermaid Chart’s visual editor will take your diagramming to a new level. Mermaid Chart offers a 14-day trial of its newly-launched Pro tier. Text can be used to create complex visual diagrams. This is a more intelligent way to create diagrams. Add styling to your diagram with the init directive to align it with your project's colour scheme. Create a variety of charts and diagrams using Markdown code. Mermaid Chart allows you to share across your organization, ensuring a single source truth. This simplifies collaboration and enhances productivity.

With powerful auto-snap tools and intelligent tools, you can draw faster. Export to high-quality PDF or SVG. No subscription. No monthly payments. For easy precision, auto-snap or align objects. In your diagrams, natively embed LaTeX equations. Smart tools make it easier to do common tasks and make you more productive. For complex illustrations, powerful boolean path and Bezier curve operations. Vexlio allows you to easily create high-quality PDF diagrams. Simply export your drawings to the PDF format. With PDFs, your diagrams and drawings will look exactly like SVG. Clear diagrams can be embedded in PDF files that are small enough to fit into a margin of a piece of paper or large enough to make a poster. Vexlio's powerful, flexible export system automatically crops the PDF to the exact size you need. You can export only the items in your drawing.

Sankey Flow Show gives classic flow diagrams and sankey diagrams a new dimension. With one slider, you can find the right line strength for all connections in your classic flow diagram. You can also use the separate data layer for the energy flow or mass flow. Sankey Flow Show makes it easy to reduce your effort. It is easy to draw attractive diagrams using Sankey Flow Show. Once you have drawn a diagram, you can add other values to the separate data layer without any need for manual adjustments. You will be amazed at how fast and easy it is to draw interesting diagrams. Sankey Flow Show runs in your browser without the need for installation. You can share your work with others and export your diagrams in standard formats (svg.jpg. png. pdf). View and restore previous revisions, collaborate with others and stay ahead of your competition.

yEd, a powerful desktop program that generates high-quality diagrams quickly and efficiently, is available for free. You can either create diagrams by hand or import data from the internet for analysis. With just a click, our automatic layout algorithms can arrange large data sets. yEd is free and available on all major platforms: Windows and Unix/Linux.

Slickplan's intuitive website design tools make it easier to plan websites and improve user experience. This includes a sitemap builder that will help you refine your site's navigation. With our suite of top-of-the-line website planning tools, you can create sitemaps and flowcharts that are refined and easy to understand, as well as diagrams such user journey paths and gather content from teams. You can also showcase design mockups and share them with others. Drag and drop interface makes it easy to quickly create customized and branded sitemaps. Our website crawler allows you to import existing website structures from a URL or file. Your website is more than just a map. Create, gather, and organize all of your site's content in one central workspace. To speed up your process, customize pages or use one our templates. Once approved content is transferred to a CMS, you can easily migrate it. You have a website that aligns with your marketing strategies and converts.

Software Ideas Modeler is a vital tool in software engineering. It is a CASE tool with many features that can assist you in software design using different diagram notations and modeling tools. Free access to our UML modeler and ERD designer, flowchart creator, wireframing tools and BPMN editor. The diagramming modules can be tailored to specific tasks within a particular domain. You can design your software or key parts with tools such as UML diagrams. Our CASE tool allows you to communicate your design clearly with the help of documentation and glossary modules. Depending on your preference, professionally process the user requirements using Advanced Use Case Analysis or User Stories. Code analytic tools are available for many programming languages. Generate source code scaffolds and code parts with source code generators. You can also use custom code templates.

Together, you can diagram your thinking in real-time. For educators, strategists, technologists, designers and policy makers. Plectica is based on years of applied research into how we think and learn. It organizes visual parts in a way that the human brain does. Our mission is to help you share and map better ideas, whether you are designing an internal workflow, brainstorming for new opportunities, or onboarding new members. Plectics is a broad transdisciplinary science that explores the hallmarks of complex systems. Simple rules underlie and become the complexity you deal with every day. The ability to change the way people see and connect information. Plectica is a tool that helps individuals and teams to organize, explain, and work together on complex information. Plectica makes it easy to visualize complex information, whether you're designing an internal system, brainstorming new products or onboarding new employees.