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
⭐ 32,355
⭐ 15,188
Contributors
👥 1,670
👥 773
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
86/100Momentum868686
(stable)
51/100Momentum515151
(stable)
Community Health
85/100Health858585
(excellent)
41/100Health414141
(developing)
Maturity Index
81/100Maturity818181
(established)
53/100Maturity535353
(emerging)
Innovation Score
69/100Innovation696969
(progressive)
51/100Innovation515151
(evolving)
Risk Score (higher is safer)
81/100Risk818181
(minimal)
61/100Risk616161
(low)
Developer Experience
53/100DX535353
(needs-improvement)
53/100DX535353
(needs-improvement)
Links
Apache Kafka Strengths
- ✓ More popular (32,355 stars)
- ✓ Larger community (1,670 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.
More Comparisons
Data source: GitHub API
Last updated: 4/12/2026