Apache Kafka vs Apache Pulsar: Key Differences & When to Use Each
Comprehensive side-by-side comparison of features, pricing, and metrics
Key Differences
Compare Apache Kafka and Apache Pulsar across features, pricing, integrations, and community metrics. Apache Kafka / Apache Pulsar.
Feature
Apache Kafka
Messaging
Apache Pulsar
Messaging
Side-by-side comparison of developer tools
Distributed streaming platform
Distributed pub-sub messaging platform
GitHub Stars
⭐ 32,505
⭐ 15,219
Contributors
👥 1,675
👥 782
Pricing
✓ Free
Enterprise: Contact sales
✓ Free
Enterprise: Contact sales
Languages
Java
Java
Features
- • Java
- • Kafka
- • Scala
- • Streaming
- • Event Streaming
- • Messaging
- • Pubsub
- • Pulsar
- • Queuing
Integrations
- • kafka
No integrations listed
Momentum Score
89/100Momentum898989
(stable)
66/100Momentum666666
(stable)
Community Health
85/100Health858585
(excellent)
43/100Health434343
(developing)
Maturity Index
82/100Maturity828282
(established)
54/100Maturity545454
(emerging)
Innovation Score
70/100Innovation707070
(innovative)
52/100Innovation525252
(evolving)
Risk Score (higher is safer)
82/100Risk828282
(minimal)
62/100Risk626262
(low)
Developer Experience
54/100DX545454
(needs-improvement)
54/100DX545454
(needs-improvement)
Links
Apache Kafka Strengths
- ✓ More popular (32,505 stars)
- ✓ Larger community (1,675 contributors)
Apache Pulsar Strengths
- ✓ More features (5 listed)
When to Use Apache Kafka vs Apache Pulsar
Use Apache Kafka when its strengths align better with your stack and team needs, and choose Apache Pulsar when its ecosystem, integrations, or cost profile is a better fit.
Related comparisons
Apache Kafka vs NATS →
Apache Pulsar vs NATS →
Apache Kafka vs RabbitMQ →
Apache Pulsar vs RabbitMQ →
Apache Kafka vs ZeroMQ →
Apache Pulsar vs ZeroMQ →
Apache Kafka vs ActiveMQ →
Apache Pulsar vs ActiveMQ →
Apache Kafka vs Elasticsearch →
Apache Pulsar vs Elasticsearch →
Apache Kafka vs Redis →
Apache Pulsar vs Redis →
More Comparisons
Data source: GitHub API
Last updated: 5/4/2026