Eraser
AI technical diagramming tool for engineering teams - generates ERDs, flow charts, and sequence diagrams from natural language or code descriptions in seconds.
Eraser is a diagramming and documentation platform built for software engineering teams. Its AI can generate entity-relationship diagrams, sequence diagrams, flow charts, and cloud architecture diagrams from a plain text description or existing code. Diagrams are written in a structured syntax that doubles as version-controlled code, enabling teams to track diagram changes in GitHub alongside the systems they represent. The canvas combines diagrams with Markdown docs and embedded code files, so architecture decisions and their visual representations live in one place. Eraser launched in 2022 and is used by engineering teams at companies including DoorDash and Brex as a lighter alternative to Lucidchart and Miro for technical documentation.
Key Features
- AI diagram generation - describe a system in natural language and get an ERD or sequence diagram in seconds
- Diagram-as-code editor - write diagrams in a structured syntax with live visual rendering
- GitHub sync - commit diagrams as code files and track history in version control alongside the codebase
- Combined canvas for diagrams, Markdown documentation, and embedded code files in one view
- Templates for software architecture, cloud infrastructure, ERDs, and system design documents
- Real-time collaboration with comments and live cursor presence for distributed engineering teams
- AI code-to-diagram - paste existing code and generate a visual representation automatically
Use Cases
- Backend engineers documenting database schemas and API flows for team architecture reviews
- Platform teams creating and maintaining infrastructure diagrams that stay in sync with code changes
- Engineering managers producing system design docs for technical onboarding and planning sessions
- Distributed teams collaborating on architecture without costly per-seat Lucidchart or Confluence licenses
Pros
- AI generates accurate ERDs and sequence diagrams from a plain text description in seconds, not minutes
- GitHub sync treats diagrams as code - version-controlled and reviewable in PRs like any other artifact
- Diagram-as-code syntax means diagrams remain editable text that scales with team size without per-seat lock-in
Cons
- Focused exclusively on technical diagrams - not a general design tool for UI mockups or presentations
- Free Personal plan limits real-time collaboration, making team evaluation difficult without a paid trial
- Canvas becomes unwieldy for very large distributed system diagrams spanning dozens of interconnected services
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