JanusGraph

Name: JanusGraph
Brand: JanusGraph

Unclaimed Editor reviewed

Distributed graph database for scale

Data & Databases Cloud & Infrastructure

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The Bottom Line

Entry price

Free, no paid tier

Biggest pro

Open source graph DB

Biggest con

Complex setup

TL;DR - JanusGraph

JanusGraph is an open-source distributed graph database for massive datasets
It supports billions of vertices and edges with pluggable storage backends
Completely free and open-source

Pricing: Free forever

Best for: Individuals & startups

What is JanusGraph?

Editorial review

JanusGraph is an open-source distributed graph database. Scale graph data across multiple machines, query relationships at scale-graph storage for serious workloads. The distribution handles scale. Multiple storage backends are supported. The query language is Gremlin. Organizations with massive graph data requirements choose JanusGraph for scalable graph storage.

Available on: Web

LCLouis CorneloupUpdated May 26, 2026 · how we evaluateSourcejanusgraph.org ↗

Pros & Cons

Pros

Open source graph DB
Scalable
Multiple backends
Apache TinkerPop
Active community

Cons

Complex setup
Learning curve
Documentation gaps
Operational overhead
Neo4j often preferred

Key Features

Graph databaseDistributedGremlinMultiple backendsScalableOpen source

Pricing Plans

Free (Open Source)

Free

Full graph database
Apache 2.0 license
Multiple storage backends
Billions of vertices support
Linux Foundation project

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

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JanusGraph FAQ

Is JanusGraph free?

JanusGraph is completely free and open source under the Apache 2.0 license. It's a Linux Foundation project with no licensing costs.

What is JanusGraph?

JanusGraph is a scalable graph database that supports various storage backends including Cassandra, HBase, and Bigtable. It handles massive graphs with billions of vertices and edges.

JanusGraph vs Neo4j?

JanusGraph scales better for massive graphs and is fully open source. Neo4j has more features and better developer experience. JanusGraph for scale, Neo4j for features and ease of use.

Source: janusgraph.org