Mermaid
Create flowcharts, sequence diagrams, Gantt charts, and more using a simple Markdown-like syntax that renders anywhere.
Technical Profile & Specs
verified 2026-11-07
- Cost
- $0 / forever (Open Source)
- License
- Open Source
- Hosting Model
- Local (on your machine)
- Platforms
- desktopcross-platformone-click install
- Installation
- Clone https://github.com/mermaid-js/mermaid or deploy with Docker Compose
- Operational Setup
- Download the native package or installer for your operating system.
- Where Your Data Lives
- All application data lives locally on your own machine.
- The Catch / Trade-off
- Community-driven open source project without dedicated enterprise SLAs.
Replaces 1 paid app
up to $25/mo ($300/yr) in subscriptions
Mermaid FAQ
Common questions
Is Mermaid free and open source?+
Mermaid is an open-source tool licensed under Open Source that runs on local. Create flowcharts, sequence diagrams, Gantt charts, and more using a simple Markdown-like syntax that renders anywhere.
What paid software does Mermaid replace?+
Mermaid serves as a free replacement for 1 paid SaaS application: Microsoft Visio, saving up to $25/month ($300/year) in subscription bills.
How do you install and set up Mermaid?+
Installation: Clone https://github.com/mermaid-js/mermaid or deploy with Docker Compose. Setup notes: Download the native package or installer for your operating system.
What is the catch or trade-off with Mermaid?+
Community-driven open source project without dedicated enterprise SLAs.