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Top Rated Diagram Software with Open source - Page 2

Last updated: October 2026

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86 software options

Zoho Show logo

Online Presentation Software

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Make detailed mind maps with a wide array of flowchart symbols. Add symbols, connectors and shapes, and edit them with vector precision.

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Jeda.ai logo

World's First, All-in-One AI Visual Workspace!

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Jeda.ai: Revolutionize strategy & creativity with AI. Transform sketches to visuals, analyze data & documents easily. Ideal for leaders to designers. Over 47,000 users & 5,000 companies globally trust us. Elevate innovation at www.jeda.ai.

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Vexlio logo

Precise diagrams with interactive popups and sharing

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Create precise, interactive flowcharts with clickable popups and shareable viewer links. Smart snapping, LaTeX, and code highlighting.

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Bizby logo

AI whiteboard with Canadian data residency

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Bizby is a real-time collaborative whiteboard with AI facilitation and Canadian data residency. Teams run retrospectives, planning, and process mapping on an infinite canvas, turn meeting transcripts into boards with extracted to-dos and decisions, and import existing boards from Miro and Mural.

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VisuallyJs logo

Javascript diagrams, apps and charts at the speed of light.

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VisuallyJs is a powerful JavaScript toolkit for building interactive diagrams, workflow builders and visual applications. With automatic layouts, edge routing, graph propagation and modern developer tools, it helps teams build sophisticated visual experiences faster.

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Overflow logo

User flows done right.

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Overflow gives designers and product managers the ability to create interactive user flows and stunning design presentations.

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Astah System Safety logo

MBSE and safety analysis in one model

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Desktop MBSE and safety analysis tool for Windows and macOS: SysML v1, STAMP/STPA, GSN/D-Case, UAF, and ASAM SCDL with full traceability, plus AI Chat Copilot (your own API key required).

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Thortspace logo

Cloud-based & on-premise strategic planning tool for teams.

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Thortspace is a cloud-based and on-premise strategic planning platform that helps businesses and organizations conceive new ideas, collaborate on existing ones, and capture knowledge. It is a collaborative mind mapping software that enables businesses to make diagrams of any thinking structure and the relationships amongst any set of thoughts.

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Diffblue Cover logo

On-premises AI Java unit test automation tool

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Diffblue Cover is an on-premises reinforcement learning platform that autonomously writes, maintains, and optimizes Java and Kotlin.

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Software Ideas Modeler logo

Powerful diagramming and wireframing CASE tool

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Software Ideas Modeler is a lightweight yet powerful CASE tool. Its complete toolset allows users to describe and design software and processes using UML 2.5, BPMN 2.0, SysML 1.5, ERD, flowcharts, ArchiMate, Autosar, and other diagrams.

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Graficto logo

The infographic creator creates fantastic infographics.

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Graficto is an easy-to-use infographic and smart visuals maker that allows you to create infographic designs in seconds.

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Astah UML logo

Focused UML modeling with AI assistance

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Create UML 2.x class, use case, sequence, activity, and state machine diagrams, plus mind maps, in one desktop tool for Windows, macOS, and Linux. Embed diagrams in Word and Excel with the Office Integration plug-in, or convert them to PlantUML and Mermaid text.

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2c8 Apps logo

Cloud-based business modeling software

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2c8 Apps is a business modeling software that allows users to visualize an organization's structure, processes, and operations through graphical models and objects.

Use various model types to visualize, gain insights, and improve your business. Try it today.

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Collaboard logo

GDPR compliant online whiteboard with self-hosting options

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Swiss online whiteboard software for creative and interactive collaboration to bring your online meetings, and workshops to the next level. The software is GDPR-compliant, and the data is hosted securely in NL and Switzerland. You can also self-host the data on-premises or in your cloud.

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Moqups logo

Wireframe, Diagram & Whiteboard Online

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Moqups is a cloud-based visual collaboration tool that helps organizations create & validate functional prototypes for designing websites or mobile applications. Whiteboard functionality lets teams collaborate on wireframes, mockups, and diagrams, and develop sitemaps, storyboards or flowcharts.

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Cacti logo

Network graphing RRDTool

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Cacti is an application performance management and monitoring RRDTool used to administrate network graphing functions. Cacti provides in-depth graph templating, numerous data acquisition methods all controlled through it's dashboard.

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OmniGraffle logo

Diagramming tool

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OmniGraffle allows you to make a diagram, process chart, quick page-layout, website wireframe or graphic design.

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Sketchboard logo

Virtual whiteboard solution for businesses of all sizes

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Sketchboard is a virtual whiteboard software that enables businesses of all sizes to visualize, share ideas, and collaborate with remote teams in real-time. Software development teams can utilize the platform to send or receive feedback on ideas, post comments, and share private whiteboards.

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AnyChart logo

Award-winning JavaScript charting library

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Award-winning JavaScript charting library. Enables developers to easily add stunning interactive charts and dashboards into any web, mobile, or standalone projects regardless of stack. Offers numerous built-in chart types, robust API and documentation, and enterprise-grade support.

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VisionFlow logo

Product dev., ALM, ITSM, Help Desk, Project Mng. and CRM

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VisionFlow is a powerful, web-based software with modules for Issue Tracking, Customer Support, CRM, Time Management, Document management, Product and Release management, Asset Management and much more. VisionFlow offers extensive functionality but is easy to use and flexible at the same time.

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Cyzag logo

Driven by Data, Powered by You

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Cyzag boosts profitability by streamlining workflows, improving efficiency, and empowering teams with data-driven insights.

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SAP Signavio logo

Understand, improve, and transform business processes

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SAP Signavio solutions help companies accelerate each phase of any transformation project, allowing them to prepare faster, deploy faster, and realize continuous value. As a market leader in business process transformation, customers look to SAP Signavio.

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Astah SysML logo

Lightweight SysML modeling for MBSE teams

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Create SysML v1 block definition, internal block, parametric, requirement, and state machine diagrams in one desktop tool for Windows and macOS. All diagrams share one model, and free plug-ins add rule-based legends, dependency matrices, and HTML export for sharing models with stakeholders.

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Astah Professional logo

Desktop UML and data modeling with AI assistance

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Create UML 2.x, ER, data flow, flowchart, CRUD, requirement, and mind map diagrams in one desktop tool for Windows, macOS, and Linux. Export diagrams as images, embed them in Word and Excel with the Office Integration plug-in, or convert them to PlantUML and Mermaid text.

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Textografo logo

Create flowcharts, mind maps and such from text

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Textografo is an online diagramming tool that enables users to create static and animated diagrams from text, including decision trees, mindmaps, and flowcharts

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