DIAGRAM/ER
ER Diagram Builder
Design database entity-relationship diagrams from a simple schema outline.
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Related tools
All →DIAGRAM/MERMAID
Mermaid Diagram Editor
Live Mermaid editor for flowcharts, sequence, class, ER, state, Gantt, pie, and mindmap diagrams. Preview and export SVG.
DIAGRAM/FLOW
Flowchart Builder
Turn a list of steps into a rendered flowchart with decision branches — no drawing required.
DIAGRAM/SEQ
Sequence Diagram Builder
Build UML sequence diagrams from a plain-text list of messages between actors.
DIAGRAM/MIND
Mindmap Builder
Turn an indented outline into a rendered mindmap for brainstorms, features, and OKRs.