Design your Neo4j graph data model
Draw nodes and relationships, give each property a Neo4j property type, add uniqueness and existence constraints where you need them, and get a Cypher script for your database. toro4n runs in your browser, and no account is needed.
Open toro4n Explore the data center example
Property types and constraints
Give each property a Neo4j property type, and mark the ones that must be Unique or Required. Your Cypher script then starts with the matching constraints.
Layers for large models
Split a model into layers you can show, hide, lock, and reorder. A node can belong to several layers at once.
Notes beside the model
Write down decisions and open questions, and attach them to the nodes and relationships they're about. Notes don't affect your data model and won't appear in your Cypher export.
A clear layout in one click
Click Arrange to untangle crossing relationships and bring the most connected nodes to the middle.
Import your existing schema
Paste the results of two read-only queries, and toro4n draws the schema of your existing Neo4j database. It never connects to the database.
Collaborate in real time
Sign in to save models online, share them with the people you choose, edit together in real time, and restore earlier versions.
Bring your AI assistant
Connect Claude, ChatGPT, or another assistant, and ask it to draw or change a model in your account from a description, a document, or a schema.
Try toro4n
Browse the example models, read the user guide, or open toro4n and start drawing.