Mermaid Chart VS OnUML

Let’s have a side-by-side comparison of Mermaid Chart vs OnUML to find out which one is better. This software comparison between Mermaid Chart and OnUML is based on genuine user reviews. Compare software prices, features, support, ease of use, and user reviews to make the best choice between these, and decide whether Mermaid Chart or OnUML fits your business.

Mermaid Chart

Mermaid Chart
Create complex diagrams easily with Mermaid Chart. Simplify documentation processes and enhance teamwork with text-based diagramming. Collaborate in real-time and boost productivity.

OnUML

OnUML
OnUML: AI diagram generator. Instantly create professional UML, flowcharts & more with natural language or Mermaid code. Simplify complex visuals.

Mermaid Chart

Launched 2022-06
Pricing Model Free Trial
Starting Price
Tech used Google Fonts,Svelte(Kit),Vercel,HSTS
Tag Communication,Project Management

OnUML

Launched 2025-02
Pricing Model Free Trial
Starting Price
Tech used
Tag

Mermaid Chart Rank/Visit

Global Rank 21306
Country China
Month Visit 1905636

Top 5 Countries

15.47%
11.59%
8.51%
3.92%
3.44%
China United States India Korea, Republic of Taiwan

Traffic Sources

0.9%
0.44%
0.04%
17.7%
34.26%
46.67%
social paidReferrals mail referrals search direct

OnUML Rank/Visit

Global Rank
Country
Month Visit

Top 5 Countries

Traffic Sources

Estimated traffic data from Similarweb

What are some alternatives?

When comparing Mermaid Chart and OnUML , you can also consider the following products

ChartDB - ChartDB: Free, open-source database schema visualizer & editor. Instantly design, collaborate, track changes, & export DDL with a single query.

RapidChart - RapidChart AI: Turn text/code into professional technical diagrams (UML, C4, ER) fast. Essential for developers, architects, engineers.

Lucidchart - Lucidchart uses AI & data to simplify complex processes. Visualize, optimize, and collaborate in real-time for smarter decisions and efficient workflows.

Diagram.chat - Platform for creating AI Powered Diagrams with features like AI generation, themes, fonts, different AI models including GPT3.5 and GPT4

More Alternatives