Cassandra vs JanusGraph: Which Should You Choose in 2026?
Choosing between Cassandra and JanusGraph comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Cassandra
Distributed NoSQL database for massive scale
Best for you if:
- • You want the higher-rated option (8.2/10 vs 7.6/10)
- • Apache Cassandra is a distributed NoSQL database designed for massive scalability
- • It handles petabytes of data across multiple data centers with no single point of failure
JanusGraph
Distributed graph database for scale
Best for you if:
- • JanusGraph is an open-source distributed graph database for massive datasets
- • It supports billions of vertices and edges with pluggable storage backends
| At a Glance |  Cassandra | |
|---|---|---|
Price | Free | Free |
Best For | Database Builders | Database Builders |
Rating | 82/100 | 76/100 |
| Feature | Cassandra | JanusGraph |
|---|---|---|
| Pricing Model | Free | Free |
| Editorial Score | 82 | 76 |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Database BuildersManaged Databases | Database BuildersManaged Databases |
Understanding the Differences
Both Cassandra and JanusGraph solve similar problems, but they approach them differently.Cassandra positions itself as "distributed nosql database for massive scale" while JanusGraphfocuses on "distributed graph database for scale". These differences matter depending on what you're trying to accomplish.
When to Choose Cassandra
Cassandra makes sense if you're looking for a completely free solution. With a score of 82/100, it's our top pick in this comparison.
When to Choose JanusGraph
JanusGraph is worth considering if you need a free tool.
Who Should Use What?
Bootstrapped or small team?
When every dollar counts, Cassandra lets you get started without pulling out your credit card.
We'd pick: Cassandra
Growing fast?
Your team doubled last quarter and you need tools that won't break when you add 50 more people. Cassandra handles scale better in our testing.
We'd pick: Cassandra
Enterprise with complex needs?
You need SSO, compliance certifications, and a support team that picks up the phone. Both have enterprise tiers—compare their security features.
We'd pick: Cassandra
Still not sure? Answer these 3 questions
How much can you spend?
Nothing at all? Cassandra is completely free.
Do you care what other users think?
Both have similar review counts. Read a few before you commit.
Expert opinion or crowd wisdom?
Our team rated Cassandra higher (82/100). But the community has upvoted JanusGraph more (0 votes). Pick your source of truth.
Key Takeaways
What Cassandra Does Better
- Higher overall score (82/100)
- Our recommendation for most use cases
Consider JanusGraph If
- You need a completely free solution
- Its specific features better match your workflow
- You prefer its interface or design approach
The Bottom Line
If we had to pick one, we'd go with Cassandra (82/100). But the honest answer is that "better" depends on your situation. Cassandra scores higher in our analysis, but JanusGraph might be the right choice if its specific strengths align with what you need most. Take advantage of free trials to test both before committing.
Frequently Asked Questions
Is Cassandra or JanusGraph better?
Based on our analysis, Cassandra scores higher with 82/100. Cassandra isfree while JanusGraph is free. The best choice depends on your specific needs and budget. We recommend testing both with free trials if available.
Can I switch from Cassandra to JanusGraph easily?
Migration difficulty varies. Check if both tools support data export/import in compatible formats. Some tools offer migration assistance or have integration partners who can help with the transition.
Do Cassandra and JanusGraph offer free trials?
Most software in this category offers free trials or free tiers. Cassandra is completely free.JanusGraph is completely free. Visit their websites for current trial offers.