Comparison

JanusGraph vs NebulaGraph

On the evidence we track, JanusGraph leads this comparison with a composite score of 54/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

JanusGraph full profile →NebulaGraph full profile →

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.

★JanusGraph54

NebulaGraph41

Attribute comparison across 2 tools
Attribute	JanusGraphLeader	NebulaGraph
vioscaleAI score	54 / 100medium · 67%	41 / 100medium · 67%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	open_source
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	✗
Integrations
Countintegrations.count	10	7
Security
Gdprsecurity.gdpr	-	✓
Scorecardsecurity.scorecard	6.4	5.7
Trust centersecurity.trust_center	-	https://nebula-graph.io/posts/bridging-compliance-and-security-graph-technology-for-stablecoin-transaction-monitoring
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.janusgraph%3Ajanusgraph-core&per_page=100 · Last 12m: 0	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.vesoft%3Anebula-spark-connector&per_page=100 · Last 12m: 0
Reliability
Sla pctreliability.sla_pct	-	99.999
Status pagereliability.status_page	✓	-
Adoption
Dependent reposadoption.dependent_repos	250	5
Github starsadoption.github_stars	5,855	12,433
Activity
Commits last 30dactivity.commits_last_30d	97	2
Release
Cadence daysrelease.cadence_days	74	74
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	-	Apache-2.0
Language
Primarylanguage.primary	Java	C++
Market
Availabilitymarket.availability	-	Available worldwide · Popular in US · HQ US
Content
Faqcontent.faq	5 items	8 items

Score

vioscaleAI score

JanusGraph54 / 100medium · 67%

NebulaGraph41 / 100medium · 67%

Pricing

Free tier

JanusGraph✓

NebulaGraph✓

Model

JanusGraphopen_source

NebulaGraphopen_source

Price level

JanusGraphfree

NebulaGraphfree

Transparent

JanusGraph✓

NebulaGraph✗

Integrations

Count

JanusGraph10

NebulaGraph7

Security

Gdpr

JanusGraph–

NebulaGraph✓

Scorecard

JanusGraph6.4

NebulaGraph5.7

Trust center

JanusGraph–

NebulaGraphhttps://nebula-graph.io/posts/bridging-compliance-and-security-graph-technology-for-stablecoin-transaction-monitoring

Vulnerabilities

JanusGraphCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.janusgraph%3Ajanusgraph-core&per_page=100 · Last 12m: 0

NebulaGraphCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.vesoft%3Anebula-spark-connector&per_page=100 · Last 12m: 0

Reliability

Sla pct

JanusGraph–

NebulaGraph99.999

Status page

JanusGraph✓

NebulaGraph–

Adoption

Dependent repos

JanusGraph250

NebulaGraph5

Github stars

JanusGraph5,855

NebulaGraph12,433

Activity

Commits last 30d

JanusGraph97

NebulaGraph2

Release

Cadence days

JanusGraph74

NebulaGraph74

History

JanusGraph20 items

NebulaGraph20 items

License

Spdx

JanusGraph–

NebulaGraphApache-2.0

Language

Primary

JanusGraphJava

NebulaGraphC++

Market

Availability

JanusGraph–

NebulaGraphAvailable worldwide · Popular in US · HQ US

Content

Faq

JanusGraph5 items

NebulaGraph8 items

Capabilities

Feature-by-feature on the axes that matter for graph databases. “-” means undocumented, not absent.

Capability comparison for Graph Databases
Capability	JanusGraph	NebulaGraph
Model
Graph model	Property graph	Property graph
Query language(s)	Gremlin	nGQL, OpenCypher, ISO-GQL
Transactions
ACID transactions	Full	Full
Consistency model	Tunable	Strong
Architecture
Storage	Pluggable backend	Pluggable backend
Distributed / scale	Sharded	Sharded
Replication / HA	✓	✓
OLTP vs OLAP	Both	Both
Deployment
Deployment	Self-hosted	Self-hosted
Search
Full-text search	Via index	Built-in
Built-in vector search	-	✓
Licensing
Licence class	Permissive OSS	Permissive OSS
Portability
openCypher / TinkerPop standard	✓	✓

Model

Graph model

JanusGraphProperty graph

NebulaGraphProperty graph

Query language(s)

JanusGraphGremlin

NebulaGraphnGQL, OpenCypher, ISO-GQL

Transactions

ACID transactions

JanusGraphFull

NebulaGraphFull

Consistency model

JanusGraphTunable

NebulaGraphStrong

Architecture

Storage

JanusGraphPluggable backend

NebulaGraphPluggable backend

Distributed / scale

JanusGraphSharded

NebulaGraphSharded

Replication / HA

JanusGraph✓

NebulaGraph✓

OLTP vs OLAP

JanusGraphBoth

NebulaGraphBoth

Deployment

JanusGraphSelf-hosted

NebulaGraphSelf-hosted

Full-text search

JanusGraphVia index

NebulaGraphBuilt-in

Built-in vector search

JanusGraph-

NebulaGraph✓

Licensing

Licence class

JanusGraphPermissive OSS

NebulaGraphPermissive OSS

Portability

openCypher / TinkerPop standard

JanusGraph✓

NebulaGraph✓

What each one is

The product in its own terms, so the numbers below have context.

JanusGraph

Leader

A database system that stores and queries extremely large graphs spread across multiple machines, enabling many users to run complex lookups simultaneously with strong transaction guarantees and support for batch analytics.

Independently observed

NebulaGraph

An open-source, distributed graph database system designed to query large relationship networks with millisecond latency while supporting complex graph analytics and high availability across multiple nodes.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

JanusGraph

Leader

Open sourceFree tier

Fully open source under Apache 2 license. No commercial licensing required.

as of 2026-08-14verify ↗

NebulaGraph

from $0.35/moHybridFree tier14-day trial

Free open-source edition; enterprise licensing and managed cloud options available

Open-source EditionFree
- Subset of core features
- Graph query language support (nGQL/openCypher, ISO-GQL)
- Graph algorithms and analytics
- Community support
Enterprise EditionContact sales
- Enhanced performance
- Enterprise-grade stability and security
- Premium support service
- Multiple deployment methods
- Advanced features: REST API, vector search, multi-graph queries, plugin management
- +3 more
NebulaGraph CloudFrom $0.35/hour (beta pricing with 70% discount); 14-day free trial
- One-click deployment and scaling
- High availability with multi-data center replication
- Automatic backup and restoration
- Integrated visualization tools (Nebula Studio, Explorer, Dashboard)
- Fine-grained access control

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	JanusGraph	NebulaGraph
WebPlatforms	✓	✓
LinuxPlatforms	✗	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✗	✓
Self-hostedDeployment	✓	✓

Platforms

Web

JanusGraph✓

NebulaGraph✓

Linux

JanusGraph✗

NebulaGraph✓

CLI

JanusGraph✓

NebulaGraph✓

Deployment

Cloud / SaaS

JanusGraph✗

NebulaGraph✓

Self-hosted

JanusGraph✓

NebulaGraph✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (1)

Elasticsearch

JanusGraph

Leader

25 total - 24 not shared

Apache Cassandra
Apache HBase
Google Cloud Bigtable
Oracle BerkeleyDB
ScyllaDB
Apache Solr
Apache Lucene
Apache Spark
Aerospike
DynamoDB
FoundationDB
Gremlin
Apache TinkerPop
Arcade Analytics
Graphexp
Graph Explorer
Graphlytic
ReGraph
Cassandra
HBase
Bigtable
Amazon Managed KeySpace
Solr
Lucene

Independently observed

NebulaGraph

8 total - 7 not shared

Azure Marketplace
AWS (planned)
Google Cloud Platform (planned)
Nebula Studio
Nebula Explorer
Nebula Dashboard
HDFS

Independently observed

Still deciding?

JanusGraph or NebulaGraph: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.