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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
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Open Source Database Designs
✓ verifiedFreemium
Online database-design tool with sample schemas and an AI generator to explore, modify or build database structures visually.
27K visits/mo
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CodebaseChat
✓ verifiedFreemium
Connects Git repos to answer plain-English questions about your code with file references and dependency context.
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Code to Flow: Visualize your code
✓ verifiedFreemium
AI tool that converts code into interactive flowcharts, sequence and class diagrams with plain-English explanations.
12K visits/mo
Pricing
No public pricing
Starter: $0 (1 repo, 50 questions/mo)
Pro: $12/mo (10 repos, unlimited questions)
Team: $49/mo (unlimited repos, SSO)
Free: $0 (3 flowcharts/day)
Monthly: $9.99/mo (unlimited)
Lifetime: $66.99 one-time (unlimited)
Core features
- ✦Library of sample database designs
- ✦Visual database designer / diagram tool
- ✦AI database generator
- ✦Modify and optimize existing schemas
- ✦SQL script export
- ✦Dialect converters (MySQL/PostgreSQL/MSSQL)
- ✦Natural-language search across a codebase
- ✦Architecture explanations and dependency graphs
- ✦Bug hunter that traces issues across files
- ✦AI code review before opening a PR
- ✦Automatic documentation generation
- ✦Multi-repo support via OAuth
- ✦Code-to-flowchart, sequence, class and user-journey diagrams
- ✦AI code explanations
- ✦Support for major languages
- ✦Export to PNG, SVG, PDF
- ✦Editable, customizable diagrams
- ✦Shareable links; code not stored
Use cases
- →Finding a starting schema for a project
- →Designing a database visually
- →Generating a schema with AI
- →Converting between SQL dialects
- →Onboarding new engineers faster
- →Answering questions about a codebase
- →Understanding how components connect
- →Finding and diagnosing bugs
- →Generating documentation from code
- →Understand and debug complex logic
- →Learn programming concepts visually
- →Create diagrams for documentation
- →Explain code in reviews
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