Comparison

Apache Storm vs Hazelcast

On the evidence we track, Hazelcast leads this comparison with a composite score of 61/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Apache Storm52
★Hazelcast61
Score
vioscaleAI score
Apache Storm52 / 100low · 39%
Hazelcast61 / 100medium · 56%
Pricing
Free tier
Apache Storm✓
Hazelcast–
Model
Apache Stormopen_source
Hazelcastcommercial
Price level
Apache Stormfree
Hazelcastunknown
Transparent
Apache Storm✓
Hazelcast✗
Integrations
Count
Apache Storm2
Hazelcast6
Reliability
Status page
Apache Storm–
Hazelcast✓
Adoption
Dependent repos
Apache Storm1,756
Hazelcast10,433
Github stars
Apache Storm6,695
Hazelcast6,620
Package downloads weekly
Apache Storm–
Hazelcast3,112
Activity
Commits last 30d
Apache Storm55
Hazelcast80
Release
Cadence days
Apache Storm29
Hazelcast15
History
Apache Storm14 items
Hazelcast20 items
License
Spdx
Apache StormApache-2.0
HazelcastApache-2.0
Language
Primary
Apache StormJava
HazelcastJava
Market
Availability
Hazelcast–
Content
Faq
Apache Storm6 items
Hazelcast5 items

Capabilities

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

Capabilities
Processing model
Apache Storm-
Hazelcast-
Delivery guarantee
Apache Storm-
HazelcastExactly once
Streaming sql
Apache Storm-
Hazelcast✓
Event time watermarks
Apache Storm-
Hazelcast-
Stateful processing
Apache Storm-
Hazelcast✓
Cdc support
Apache Storm-
Hazelcast-
Deployment model
Apache StormSelf hosted
HazelcastSelf hosted
Autoscaling
Apache Storm-
Hazelcast✓
Connector breadth
Apache Storm-
Hazelcast-
Latency class
Apache Storm-
HazelcastSub second
Open source
Apache Storm✓
Hazelcast✓
SOC2
Apache Storm-
Hazelcast-
Pricing model
Apache StormOpen source self host
HazelcastOpen source self host

What each one is

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

Apache Storm

A free and open-source framework that reliably processes continuous streams of data across distributed systems with guaranteed delivery and fault tolerance.

Independently observed

Hazelcast

Leader

A distributed, in-memory computing platform that combines caching, stream processing, and data integration to enable real-time applications with low-latency data access and instant decision-making.

Independently observed

Pricing

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

Apache Storm

Open sourceFree tier

Free and open source

as of verify ↗

Hazelcast

Leader
Quote-based
as of verify ↗

Platform & deployment

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

Platforms
Linux
Apache Storm✗
Hazelcast✓
CLI
Apache Storm✓
Hazelcast✓
Deployment
Cloud / SaaS
Apache Storm✗
Hazelcast✓
Self-hosted
Apache Storm✓
Hazelcast✓
Hybrid
Apache Storm✗
Hazelcast✓

Integrations

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

In common (2)
  • Hadoop
  • Kafka

Apache Storm

2 total - 0 not shared
  • Hadoop
  • Kafka
Independently observed

Hazelcast

Leader
10 total - 8 not shared
  • Spring Integration
  • MongoDB
  • S3
  • RDBMS
  • JMS
  • Oracle Database
  • Microsoft SQL Server
  • JDBC
Independently observed
Still deciding?

Apache Storm or Hazelcast: 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.