DiagramGPT by Eraser
Diagrams
Generated engineering diagrams.
Like Mermaid Chart, DiagramGPT by Eraser is in the Diagrams category. Both are freemium. Worth comparing on the detail page.
We've curated 48 of the best alternatives to Mermaid Chart, ranked by feature overlap, topic similarity, user ratings, and popularity. DiagramGPT by Eraser, Diagramming, and FlowCraft lead the list as the closest matches.
Updated May 18, 2026
The list includes 1 free alternative, 43 freemium, 3 paid, and 1 with a free trial, so whether you're looking for a no-cost replacement or a more capable paid tier, there's an option to compare. Mermaid Chart itself is freemium, which makes freemium alternatives the most natural starting point.
Many of these tools cluster around use cases like Project Management, Visualization, Api, and Free + From $10/mo — the same problem spaces Mermaid Chart addresses. Cross-referencing tools that overlap on multiple topics gives a more reliable signal than category alone, because two products in the same category can still serve very different workflows.
Our ranking weighs eight signals: shared category, topic overlap, feature overlap, name and description text similarity (via PostgreSQL's pg_trgm and tsvector), Bayesian-smoothed user ratings, pricing-model match, popularity, and editorial overrides. Scores are then normalized within each tool's own candidate pool so the top match always represents the strongest available alternative.
Use the table of contents below to jump to free or paid alternatives, or scroll down to compare each option side-by-side with Mermaid Chart.
Ranked by compatibility score
Diagrams
Generated engineering diagrams.
Like Mermaid Chart, DiagramGPT by Eraser is in the Diagrams category. Both are freemium. Worth comparing on the detail page.
Diagrams
Instantly design UML & workflows with AI
Like Mermaid Chart, Diagramming is in the Diagrams category. Both are freemium. Worth comparing on the detail page.
1 free and 43 freemium options.
3 paid options.
3 paid alternatives to Mermaid Chart on /tools/mermaid-chart/alternatives.
24 additional candidates
DiagramGPT by Eraser ranks as the highest-scoring alternative to Mermaid Chart, based on shared category, topic overlap, feature similarity, and user ratings. Ratings are still being collected for this tool.
Yes — 1 fully free and 43 freemium alternatives are available, including DiagramGPT by Eraser, Diagramming, and DGM.
DiagramGPT by Eraser is similarly priced (freemium) and sits in the same category (Diagrams). View its detail page to compare features, integrations, and reviews side-by-side.
Top Diagrams alternatives include DiagramGPT by Eraser, Diagramming, FlowCraft, and EdrawMax. These tools share the same primary category and have meaningful topic overlap with Mermaid Chart.
Diagrams
Generate diagrams with a click
Like Mermaid Chart, FlowCraft is in the Diagrams category. FlowCraft is paid, while Mermaid Chart is freemium. Worth comparing on the detail page.
Diagrams
AI-powered diagramming made easy.
Like Mermaid Chart, EdrawMax is in the Diagrams category. EdrawMax is paid, while Mermaid Chart is freemium. Worth comparing on the detail page.
Diagrams
Create and publish diagrams with AI-powered code generation.
Like Mermaid Chart, DGM is in the Diagrams category. DGM is free, while Mermaid Chart is freemium. Worth comparing on the detail page.
Diagrams
Generate diagrams from text with AI
Like Mermaid Chart, Draft1 is in the Diagrams category. Draft1 is paid, while Mermaid Chart is freemium. Worth comparing on the detail page.
Diagrams
Visual expression artifact. Turn docs and ideas into instant diagrams with AI.
Like Mermaid Chart, Fluig AI is in the Diagrams category. Fluig AI is free-trial, while Mermaid Chart is freemium. Worth comparing on the detail page.
Learning
Transform complex concepts into clear visuals.
The Visualizer shares 2 topics with Mermaid Chart: Project Management and Visualization. Both are freemium.
Grammar Checking
AI Grammar Checker
Trinka AI shares 1 topic with Mermaid Chart: Free + From $6.67/mo. Both are freemium.
Maps
Turn text into interactive maps in seconds
Textomap shares 1 topic with Mermaid Chart: Data Presentation. Both are freemium.
Construction Planning
AI-powered project scheduling for faster, optimized results
Opteam Plans shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Content
AI-powered content creation in clicks
WriteMe shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Task Management
Supercharge your focus and productivity with AI-powered time tracking.
timeMaster shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Book Writing
Write more stories, less hassle with AI-powered book software.
Scene One shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Document Writing
Create impactful documents with ease
Craft shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Collaborative Documents
The doc for everyone, meet the evolution of docs
Coda AI shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Image To Image
Turn images into AI-generated design concepts.
NewArc shares 1 topic with Mermaid Chart: Visualization. Both are freemium.
Dependency Updades
AI-powered dependency updates made easy.
Depshub shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Team Information Sharing
Access and share information instantly with memorable short links.
GoLinks shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Interior Design
AI-powered dream home design in seconds
Roomsgpt shares 1 topic with Mermaid Chart: Visualization. Both are freemium.
Project Management
Boost productivity with AI-powered project management
Project Planner shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Design Ideas
Auto-generate designs with AI
Magic Design by Canva shares 1 topic with Mermaid Chart: Visualization. Both are freemium.
Prompt Management
Self-hosted AI automation for seamless prompt management
PRST.ai shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Article Writing
AI-powered content creation partner for entrepreneurs.
Comaker shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
38 more free/freemium alternatives listed below. Browse all Mermaid Chart alternatives ↓
44 free or freemium alternatives to Mermaid Chart on /tools/mermaid-chart/alternatives.
Goodhues shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
MetaSpark shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Spellmint shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
ContentOS shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
BubbleTea shares 1 topic with Mermaid Chart: Project Management. Both are freemium.
Neither Mermaid Chart nor DiagramGPT by Eraser has user ratings yet — be the first to review either tool to help future visitors compare them.
