Mermaid Chart
Mermaid Chart builds hosted, collaborative diagramming and workflow-management tools around the open-source Mermaid.js project. Its mission is to make complex systems easier to explain, document, collaborate on, and keep synchronized with code using text, AI, and visual editing.
At a Glance
- Software and infrastructure engineering teams
- Backend and data engineering teams
- Developers and technical writers
- Product, operations, and project-management teams
- +3 more
AI Tools by Mermaid Chart
(1)
Mermaid
AI Diagram Editor with Mermaid Syntax
Discussions
No discussions yet
Be the first to start a discussion about Mermaid Chart
Latest News
Mermaid Flow entered public beta.
Venn diagrams became available in Mermaid.
Mermaid.js introduced fishbone diagrams for root-cause analysis in v11.13.0.
Mermaid.js v11.13.0 launched with two new diagram types and broader improvements.
Products & Services
Hosted Mermaid workspace for creating, sharing, presenting, and collaborating on text-based diagrams, with cloud storage and team features.
Open-source JavaScript diagramming and charting library that renders Markdown-inspired text definitions into diagrams such as flowcharts, sequence, class, state, ER, Gantt, mindmap, architecture, Sankey, quadrant, timeline, and user-journey diagrams.
AI-assisted diagramming that turns natural-language prompts, documents, code, schemas, and conversations into editable Mermaid diagrams; supports prompt-based redesign and AI Repair.
GUI editor for designing and refining diagrams while keeping visual edits and Mermaid syntax bidirectionally synchronized; supports collaboration and sharing.
Market Position
Mermaid Chart differentiates from general-purpose visual whiteboards and drag-and-drop diagramming tools such as Lucidchart, Miro, Mural, and draw.io by making text/code the source of truth: diagrams are reviewable, diffable, versionable, and kept beside documentation and software. It competes for enterprise workflow and knowledge-management use cases while extending the open-source Mermaid.js community with AI generation, a GUI editor, collaboration, presentations, and integrations.
Leadership
Founders
Knut Sveidqvist
Swedish software architect and developer who created Mermaid.js in 2014 after encountering the limitations of Microsoft Visio; he built Mermaid as an open-source, Markdown-like diagramming tool while working at a telecom company in Sweden. He is Mermaid Chart's CTO and technical founder.
Open Core Ventures
Open Core Ventures, founded by GitLab co-founder and CEO Sid Sijbrandij, partnered with Sveidqvist to commercialize the Mermaid open-source project and handled company formation and early business infrastructure.
Executive Team
Andrew Firestone
Chief Executive Officer
Serial entrepreneur and investor who joined Mermaid Chart about a year after its formation through Open Core Ventures; he brought business, product, growth, and fundraising experience and led the $7.5 million Seed financing.
Knut Sveidqvist
Chief Technology Officer and Founder
Creator of Mermaid.js and a software architect with more than 20 years of software experience; he originated the open-source project and leads its technical and open-core evolution.
Board of Directors
Founding Story
Sveidqvist started Mermaid after losing a Visio file and having to redraw a diagram; he wanted diagrams represented as text so they could be versioned alongside documentation and code. As the open-source project grew beyond what he could sustainably maintain on evenings and weekends, Open Core Ventures approached him in 2022 with an open-core commercialization model, formed Mermaid Chart with him, and later introduced Andrew Firestone as CEO.
Business Model
Revenue Model
Freemium SaaS subscriptions for individual and team workspaces, with paid AI credits and enterprise contracts. Mermaid.js remains open source; hosted collaboration, AI, visual editing, presentations, integrations, administration, and enterprise controls are monetized through Mermaid Chart plans.
Pricing Tiers
Up to 6 diagrams, limited diagram size, 15 AI credits, and 1 team/project creation.
Unlimited diagrams and diagram size, 300 AI credits per year.
2,000 AI credits per year, unlimited free viewer seats, and unlimited teams/project creation.
SSO, custom contracts and invoicing, IP management, and a dedicated Customer Success Manager.
Target Markets
- Software and infrastructure engineering teams
- Backend and data engineering teams
- Developers and technical writers
- Product, operations, and project-management teams
- Consultants and business strategists
- Educators and technical learners
- Software architecture and infrastructure documentation
- API and system interaction documentation with sequence diagrams
- Database and data-model design with ER diagrams
- Codebase onboarding, dependency and ownership visualization
- Technical documentation, READMEs, and Git-based documentation workflows
- Business process mapping, workflow management, and root-cause analysis
- The company reports more than 5 million people and more than 200,000 companies using Mermaid Chart/Mermaid ecosystem tools.
- Mermaid is supported natively in GitHub and GitLab.
- Mermaid Chart provides enterprise and documentation workflows for Atlassian Confluence and Jira.