Free online database schema design tool for ER diagrams and SQL generation
Free tree testing tool for testing information architecture
Stage
Not given
Established
Founded
Not given
2021
Based in
Not given
Not given
Pricing model
Freemium
Free
Pricing
Free tier includes the open-source editor with all SQL dialects, import & export, and local diagram storage. drawDB Pro offers paid plans for Solo Pro and Team Pro with cloud storage, real-time collaboration, AI schema assistant, GitHub integration, and priority support.
Free for unlimited tree testing and card sorting studies, unlimited participants and responses, and full analysis. Participant recruitment through UXbeam's panel starts at $1 per participant-minute.
Key features
Entity-relationship diagram editor
SQL generation for PostgreSQL, MySQL, SQLite, MariaDB, SQL Server, and Oracle
DBML import and export
Real-time collaborative database design
Cloud storage and team workspaces
AI-assisted schema design
Schema reverse engineering from existing SQL
Version history and migration generation
Export to SQL, JSON, PNG, JPEG, SVG, and PDF
Keyboard shortcuts and customizable workspace
Unlimited tree-testing studies and participants
Leading-task detection to catch biased wording
Path replay visualization of participant navigation
Task outcome breakdown into direct, indirect, and elsewhere
Full-scenario completion tracking across multiple tasks
Mobile-compatible participant experience
Integrated card sorting with tree testing workflow
Multiple valid destinations per task
Iterative testing with versioned results
Complete CSV export of participant-level results
What makes it different
Free and open source with no account required to start designing
Supports all major SQL dialects in one tool
Self-hostable on your own infrastructure with Docker
Real-time team collaboration with shared cursors and presence
No credit card required and truly unlimited at no cost
Built-in methodological safeguards prevent common research mistakes
One-screen setup lets researchers create tests in minutes
Mental Model Detection identifies competing ways different user groups organize content
AI-assisted participant recruitment with audience targeting
drawDB