List of the Top 25 Free Diagram Software in 2025

Miro is designed to align your team's thinking seamlessly. As a virtual whiteboard and collaboration platform, it enhances the cooperative efforts of cross-functional teams in generating exceptional outcomes. Unlike video conferencing tools, Miro focuses solely on facilitating collaboration among team members who may be spread across different locations and time zones, ensuring that they can effectively share and develop their ideas even when not physically together. This platform boasts over 200 ready-to-use templates for idea capture and visualization, along with features such as comments, chat, screen sharing, and integration with widely-used business applications. Additionally, Miro AI acts as a powerful catalyst for your team, allowing you to maximize your creativity and efficiency beyond previous limits. By leveraging Miro AI, you can transform your innovative concepts into reality, making it an essential resource for enhancing your team's collaborative spirit and inventive potential. With Miro, the future of teamwork is bright and full of endless possibilities.

In a collaborative environment where teams come together to innovate design, Figma enables users to efficiently create, test, and deliver outstanding designs from start to finish. Your workflow is streamlined and effective, thanks to Figma's combination of beloved design tools and unique features like the Arc tool and Vector Networks. The platform ensures that your creative process remains uninterrupted, eliminating the need to pause for saving, exporting, or installations, which exemplifies the true potential of cloud-based software. With animated prototypes, your concepts can be brought to life quickly, mimicking real-world interactions and providing a tangible feel. Gathering user feedback and testing your ideas becomes a regular practice, as you can effortlessly share links to prototypes or design files for input from others. Furthermore, regardless of geographical barriers, you and your colleagues can simultaneously edit the same file in real-time, fostering a seamless collaborative experience. Figma also allows for the development of an easily manageable and scalable design system that enhances accessibility within your organization. When all designers utilize a common language, it significantly boosts their ability to perform at their highest level, fostering a culture of creativity and excellence. This synergy ultimately leads to more innovative outcomes and a stronger team dynamic.

Lucidchart is a web-based diagramming application that enables users to design and disseminate high-quality diagrams efficiently. It facilitates various forms of communication and teamwork, whether you are working on system architecture, engaging in brainstorming sessions, or managing projects. With its versatility and user-friendly interface, Lucidchart has garnered the affection of millions of users worldwide. This widespread appreciation highlights its effectiveness in enhancing productivity and collaboration across different fields.

Samepage, a celebrated collaboration platform designed for teams, empowers users to work together effectively and enhance productivity. This software caters to teams of all sizes, providing a range of online collaboration features like video calls, task organization, and document sharing. Additionally, it seamlessly integrates with leading business applications, enabling users to streamline their workflows efficiently. By utilizing Samepage, teams can improve communication and coordination in their projects.

Edraw Max stands out as a multifaceted diagramming application that allows users to generate an array of visual formats, such as flowcharts, mind maps, organizational charts, network diagrams, and floor plans, all backed by a rich selection of templates and examples. This robust software is designed to meet diverse requirements, whether you are crafting detailed flowcharts, fishbone diagrams, or planning office layouts, ensuring that you can find precisely what you need for your project. Its competitive pricing makes it a notable choice compared to other similar software offerings available today. With thousands of professionally designed templates at your disposal, you can easily spark inspiration and initiate your design journey without delay. Moreover, Edraw Max offers outstanding file compatibility, which facilitates the seamless import of Visio files and allows you to export your work in various popular formats, such as PDF, Word, PPT, and JPEG. This software empowers users by enabling the effortless creation of over 280 distinct types of diagrams, spanning from technical illustrations to captivating infographics, demonstrating its superiority over Visio in several respects. Furthermore, Edraw Max serves as an essential tool for those aiming to refine their diagramming skills and boost their productivity in various tasks. Ultimately, for anyone seeking to enhance their visual communication and organizational capabilities, Edraw Max is an invaluable asset that should not be overlooked.

Backlog serves as a collaborative and project management platform designed to enhance team productivity, improve visibility, and streamline the process of tracking projects. By facilitating cooperation among development teams, IT, Marketing, and Design, organizations can accelerate the delivery of high-quality projects. Its fundamental features encompass Gantt Charts, Burndown Charts, Issues, Subtasks, Watchlists, and Comment threads. Additionally, it includes essential tools like version control, file sharing, wikis, and bug tracking. With dedicated apps available for both iOS and Android, users can conveniently update their projects from virtually anywhere, ensuring flexibility and efficiency in project management. This adaptability allows teams to remain connected and responsive regardless of their location.

An interactive online whiteboard tailored for teams to brainstorm and innovate collectively. It allows users to share, explore, and refine ideas together, improving communication through sticky notes for extra insights. Participants can express their feelings and reactions via dot voting, stamping, emoting, drawing, or chatting, further enriching the collaborative experience. Concepts can be organized effectively using a variety of markers, shapes, and connectors to demonstrate their interconnections. You can document workflows and systems with numerous pre-made shapes and connectors that easily align with the grid. FigJam is designed to be intuitive and simple, ensuring that both you and your team can sustain an efficient brainstorming process. It integrates seamlessly with Figma, making it possible to centralize all design tasks—from initial concepts to final execution—on one platform. Team members can also utilize design libraries in FigJam to create materials that are cohesive and consistent with brand guidelines. Quick expressions can effectively convey emotions without cluttering your canvas, while stamps are useful for voting on ideas, expressing appreciation, or marking areas that need further attention. Moreover, the cursor chat feature serves as a practical tool for sharing thoughts during live brainstorming sessions. You can customize your workspace using default library assets or personal components, which enhances the creative process. Overall, FigJam cultivates a vibrant environment where collaboration thrives, leading to innovative outcomes and stronger team dynamics. The platform’s capabilities ensure that every voice is heard, contributing to the richness of the shared creative journey.

Create a variety of shapes and diagrams to enrich your documents, presentations, and websites with eye-catching charts and visuals that are easy to produce. Work together effortlessly by designing charts, layout diagrams, and flow charts that can be smoothly incorporated into other documents or directly embedded on websites. Are you interested in contributing your ideas? You can comment on any shape or text box to add more context to your discussion and even alert others through email by tagging them in your comments. Experience the ease of accessing your projects from any location at any time, as all of your creations are automatically saved and backed up in Google Drive, ensuring that you can retrieve them on any device you prefer. This feature guarantees that your creative endeavors are always accessible, regardless of your whereabouts or the device you are utilizing, fostering an environment of continuous creativity and collaboration. Additionally, this system promotes teamwork by allowing multiple users to edit and update projects simultaneously, enhancing productivity and innovation.

Draw.io, commonly known as diagrams.net, is a powerful online tool designed for creating a wide variety of diagrams, flowcharts, and other visual formats. Users can develop an impressive range of diagrams, from simple organizational charts to complex network layouts, with ease. The platform integrates smoothly with popular cloud storage services such as Google Drive, OneDrive, and GitHub, allowing for convenient access and collaboration among team members. With a strong emphasis on user privacy and data security, Draw.io provides options for saving diagrams either locally or in the cloud, giving users complete control over their data. Its intuitive interface ensures that individuals of all design skill levels can utilize the tool effectively, making it a go-to option for anyone needing to create visual content. Furthermore, the application's continuous updates enhance its functionalities, keeping it relevant in the ever-evolving digital landscape.

Cacoo, developed by Nulab, is a web-based diagramming tool that has gained the trust of more than 2 million users worldwide. It empowers contemporary teams to design various visual representations such as wireframes, flowcharts, organizational charts, and mind maps. This functionality enhances teamwork and boosts overall efficiency. Additionally, Cacoo offers seamless integrations with popular applications like Dropbox, Google Drive, and Confluence, making it a versatile choice for collaborative projects. Users can easily share and edit diagrams in real-time, further streamlining the creative process.

Napkin seamlessly transforms your written concepts into compelling visuals, streamlining the way you convey your ideas. Instead of depending on prompts, it generates relevant images directly from your text entries, allowing for a more intuitive creation process. You are then empowered to select the image that most accurately represents your intent. The visuals generated by Napkin are entirely customizable, enabling adjustments to both the content and design to optimize their impact. You can further enhance your creations by incorporating or replacing icons from an extensive library, ensuring that the visual style matches your theme. With its dynamic connectors that tie different elements together and color options that look great in both light and dark settings, Napkin's adaptability is impressive. The visuals you design can be utilized on multiple platforms, capturing your audience’s interest through automatically generated infographics, diagrams, flowcharts, and more. Essentially, Napkin acts as a personal visual advisor, translating your text into engaging graphics such as charts, scenes, and images, thereby facilitating effective communication of your ideas. This innovative tool not only simplifies the text-to-visual transition but also enhances your ability to present intricate information in a straightforward and visually appealing way, ultimately making your communication more impactful. Whether for professional presentations or personal projects, Napkin proves to be an invaluable asset in visual storytelling.

Quickly generate diagrams through simple text commands, allowing you to formulate schemas directly from your keyboard without the hassle of switching to a graphical user interface. Enter just the necessary information to articulate your concepts clearly and efficiently, ensuring that your creative flow remains uninterrupted by graphical tools. Well-crafted diagrams not only improve the aesthetic quality of your documents but also promote better understanding and communication of ideas. Additionally, you can effortlessly share these diagrams online to foster collaboration with others. The ease of creating and sharing diagrams makes it a valuable tool for both individual and team projects.

ERD Lab is an online application designed for crafting ER diagrams, allowing users to visually construct their database structures. You have the option to import existing SQL databases or build new ones without the need for coding. This platform simplifies the visualization of your database schemas, facilitating easy sharing and collaboration among team members. After finalizing your design, you can export it in various formats, including SQL, PDF, or image files, and all of these functionalities are offered for free! Suitable for beginners and seasoned developers alike, ERD Lab ensures a seamless user experience that caters to all skill levels. This makes it an invaluable resource for anyone looking to enhance their database design process.

Pencil is an innovative user interface design tool crafted by Evolus, leveraging technologies from Mozilla and offered as an open-source solution. This tool empowers analysts and developers to quickly design application interfaces, enhancing communication with clients during the requirements gathering process while also laying the groundwork for collaborative application development. The establishment of the Pencil project underscores Evolus' dedication to community contribution, as it is released under the GPL license, which permits users to modify and improve the source code. Users have the flexibility to employ Pencil as either a Firefox 3 browser add-on or as a standalone application. Furthermore, its cross-platform design guarantees compatibility with any system that runs Mozilla Firefox 3, significantly expanding its accessibility. The ability to streamline the interface design process makes Pencil an indispensable asset for teams engaged in such projects, thus fostering greater creativity and efficiency in their workflows. Ultimately, Pencil represents a significant step forward in user interface design, bridging the gap between technical development and user experience.

Creately is an adaptable visual collaboration platform that simplifies the transition from idea generation to implementation within a collective visual environment. With an extensive library of over 10,000 templates, it allows teams to visually merge concepts into various models, outline workflows, or define complete organizational frameworks. While initially promoting creativity and overarching strategic thinking, Creately evolves into a central hub for projects and teams, serving as a Visual Database as users progress. They can enhance visual materials with annotations, files, and connected information, centralizing essential details within the platform. By automatically refreshing linked data throughout the system, Creately guarantees data consistency, positioning itself as the ultimate reference point for teams and projects. Its capabilities make it perfect for collaborative meetings, workshops, brainstorming activities, process visualization, technical design tasks, and agile project management. As a result, Creately emerges as an essential resource for teams facing the challenges of collaboration in today’s dynamic work environment. Furthermore, its user-friendly interface ensures that teams can easily adapt and harness its full potential.

Venngage is a user-friendly design platform that transforms mundane data, bland documents, and intricate information into visually appealing graphics. With access to an extensive library of captivating visual communication templates designed by our talented in-house team, you can craft impactful visuals effortlessly. No prior design skills are necessary! Thanks to our intuitive drag-and-drop editor, along with accessible video tutorials and courses, you’ll be able to produce eye-catching designs within just minutes. Venngage offers a diverse array of templates tailored for business and professional communication, including infographics, charts, reports, diagrams, mind maps, presentations, and much more, enabling you to leave a lasting impression on your boss, clients, prospects, and online audience. By utilizing Venngage, you can elevate your presentations and effectively convey your message with ease.

JointJS+ is a sophisticated diagramming toolkit that serves as a commercial upgrade to JointJS, enabling developers and organizations of all sizes to create intricate Low-Code/No-Code and visual applications effortlessly. By leveraging ready-made UI plugins, developers can tailor their applications, modify user interfaces, and integrate elements tailored to their specific needs. Companies can apply JointJS+ to seamlessly connect their interfaces with workflow systems, develop business process management tools, create diagramming solutions, and manage projects, among other applications. The toolkit includes a robust programmer's kit that facilitates features like undo/redo functionality, graph manipulation, and data validation. Additionally, it boasts an array of features such as custom shapes, JSON import and export capabilities, interactive diagrams, a read-only mode, automatic layouts, an inline text editor, a path editor, zoom options, charting functionalities, and much more. With a risk-free 30-day trial, users can fully explore the extensive capabilities and versatility that JointJS+ has to offer, making it an attractive choice for developers looking to enhance their projects.

ClickCharts simplifies the process of generating flowcharts and diagrams through its user-friendly software. With this tool, you can swiftly develop impactful visuals representing your organization, workflows, mind maps, UML diagrams, and various other elements. It allows for the mapping of data flows and value streams, enabling the identification of bottlenecks and opportunities for enhancing productivity. Users have the flexibility to either utilize pre-designed templates to jumpstart their projects or create custom diagrams from the ground up using a selection of shapes, symbols, line connectors, and more. Additionally, you can export your creations in multiple formats, including JPG, GIF, and PNG, ensuring versatility in how you share and present your work. Overall, ClickCharts is an excellent solution for anyone looking to visualize complex information effectively.

Software Ideas Modeler is an essential tool for software engineering professionals, offering a wide range of features that support software design with different diagramming techniques and modeling functionalities. This all-encompassing CASE tool grants users the ability to work with various diagram types, including UML modelers, ERD designers, flowchart creators, wireframing tools, and BPMN editors, all at no charge. Each diagramming component is specifically designed to cater to distinct tasks within its domain, enabling users to efficiently create UML diagrams, Layer diagrams, Flowcharts, and Data Flow Diagrams, among others, for effective software or component design. Moreover, the documentation and glossary tools included enhance the clarity of communication regarding design ideas. You can also apply Advanced Use Case analysis or User Stories, allowing for a structured approach to gathering user requirements tailored to your method of choice. In addition, the code analysis features empower users to transform code into diagrams for various widely-used programming languages. The platform also allows for the generation of source code scaffolds and specific code snippets via customizable source code generators with tailored templates. By integrating these diverse tools into your workflow, you can significantly improve both your design methodologies and the overall efficiency of the software development process, fostering a more productive environment for creating high-quality applications. Overall, Software Ideas Modeler proves to be a versatile solution for anyone seeking to streamline their software engineering projects.

Experience a collaborative visualization of your thought processes in real-time, tailored for strategists, educators, technologists, designers, policy makers, and various thinkers alike! Leveraging in-depth research on cognition and learning, Plectica emulates the brain's functionality by visually structuring components that interconnect to form a comprehensive understanding. Whether you are charting an internal workflow, generating groundbreaking ideas, or easing the onboarding process for new employees, our mission is to empower you to effectively organize and communicate your concepts. Plectica delves into the rich domain of Plectics, which examines the fundamental nature of complex systems, illustrating how simple principles can lead to the multifaceted challenges we encounter daily. By revolutionizing the way information is visualized and linked, Plectica allows individuals and teams to systematically arrange, clarify, and collaborate on intricate datasets. In the end, Plectica not only streamlines your projects—be it through internal diagrams, product development, or team integration—but also guarantees that everyone remains aligned. This innovative approach significantly improves comprehension while cultivating an environment ripe for collaboration and creativity. By harnessing the power of visual thinking, Plectica paves the way for deeper insights and more effective teamwork.

Create clear and understandable process diagrams that facilitate seamless comprehension of workflows for every team member in your organization. Set up a centralized Process Repository, granting your team a unified reference point for all process-related documentation. With TeamFlow®, your diagram goes beyond being a simple visual tool; it serves as an intricate graph data model of your operations. By employing a universal data model, TeamFlow® allows for a quick and intuitive construction of process diagrams, enabling users to create them in mere seconds. You can effortlessly drag and drop components like tasks, meetings, and decisions, making it simple to animate your workflow. The use of distinct shapes and colors guarantees visual clarity, ensuring that everyone in your organization can easily understand the flow of processes. Additionally, TeamFlow® employs a user-friendly design language, ensuring that your process diagrams maintain a consistent look every time. It also places a strong emphasis on privacy and security, safeguarding your organization's confidential information. By adopting this comprehensive approach, your team can collaborate effectively and maximize the potential of every diagram, ultimately enhancing overall productivity. Furthermore, this not only streamlines operations but also fosters a culture of transparency and shared understanding throughout the organization.

Create a graphical representation and a detailed diagram of your team's fundamental processes to improve understanding and streamline your business operations. This strategy not only aids in the orientation of new team members but also promotes collaboration across different departments and guarantees that stakeholders have the necessary visibility into the processes that enhance your efficiency. Collaborate with your team to outline critical procedures and identify areas ripe for automation or optimization through insights powered by artificial intelligence. Engage with your colleagues to plan, develop, and visualize workflows, whether in real-time or asynchronously, while adding annotations and context to support continuous improvement and safeguarding access control to avoid unintended changes. Achieving a thorough grasp of how your workflows, applications, and team members are interconnected is crucial. Furthermore, distribute your diagrams and share valuable insights regarding the tools and automations that propel your business, all gathered in a single, easily accessible platform to promote a more productive work environment. By assembling this centralized overview, you can effectively spot bottlenecks and potential enhancements that were previously overlooked, ultimately leading to a more agile and responsive organization. Additionally, this visual mapping can serve as a foundation for future training sessions and strategic planning discussions.

DrawExpress is a highly effective application that specializes in gesture recognition, enabling users to effortlessly draw diagrams and flowcharts. With its simple and intuitive interface, the application makes the creation process feel as natural as sketching with a pen on a sheet of paper. Whether you are working in software development, financial analysis, business management, legal documentation, or academic research, DrawExpress is an ideal solution to meet all your diagramming needs. Its adaptability and user-centric design distinguish it as an essential tool for both professionals and students, enhancing productivity and creativity in various fields. Additionally, the application empowers users to visualize complex ideas quickly and clearly, simplifying communication and collaboration.

Utilize markdown code to craft intricate diagrams while collaborating with your team in real-time. The process of diagramming through text streamlines documentation efforts and enhances workflow efficiency. By making use of the Teams feature, you can initiate projects and invite colleagues to participate. This capability facilitates sharing throughout your organization, guaranteeing a unified source of truth and boosting overall productivity. With the visual editor provided by Mermaid Chart, your diagramming experience will elevate to new heights. Additionally, Mermaid Chart grants access to a 14-day trial of its newly introduced Pro tier, allowing users to explore advanced features. You can leverage text to design elaborate visual diagrams, representing a smarter approach to diagram creation. By incorporating the init directive, you can personalize the styling of your diagrams to match your project's color palette. The platform supports the generation of a wide array of charts and diagrams using Markdown code, further enhancing your creative capabilities. Through Mermaid Chart, sharing becomes seamless within your organization, reinforcing a singular source of truth, which not only simplifies teamwork but also significantly enhances productivity. Ultimately, this innovative tool empowers users to visualize complex ideas more effectively than ever before.

Heptabase provides a platform for visually arranging and understanding your studies, research, and projects effectively. It enables you to visualize your notes through tools like whiteboards, sections, and mind maps, helping you to fully grasp the information you've acquired. By bringing together highlights, annotations, PDFs, journals, and research notes in a single location, you can discover fresh insights. The platform simplifies complex projects with its powerful tags and properties, promoting flexibility and ease in managing your tasks. Additionally, it ensures full offline access at remarkable speeds, allowing you to sync and retrieve your notes seamlessly across various desktop and mobile devices, as well as web browsers. You can manage your notes and files without an internet connection, enjoying the capability to quickly search, load, and edit them as needed. Heptabase is crafted as a visual note-taking tool that aims to boost your learning experience and enable an in-depth exploration of complicated topics, thereby enhancing your comprehension of the subjects that resonate with you. Its design philosophy prioritizes your understanding of significant topics over merely accumulating notes, making it an invaluable tool for anyone eager to learn. The platform's unique approach not only assists in organizing knowledge but also actively engages you in the learning process, fostering a deeper connection with the material.