Elasticsearch vs Apache Kafka: Key Differences & When to Use Each

Comprehensive side-by-side comparison of features, pricing, and metrics

Key Differences

Compare Elasticsearch and Apache Kafka across features, pricing, integrations, and community metrics. Elasticsearch / Apache Kafka.

Feature

Elasticsearch

Database

Apache Kafka

Messaging

Side-by-side comparison of developer tools

Distributed RESTful search and analytics engine

Distributed streaming platform

GitHub Stars

⭐ 78,369

⭐ 34,116

Contributors

👥 2,566

👥 1,782

Pricing

✓ Free

Enterprise: Contact sales

✓ Free

Enterprise: Contact sales

Languages

Java

Features

• Elasticsearch
• Java
• Search Engine

• Java
• Kafka
• Scala
• Streaming

Integrations

• elasticsearch

• kafka

Momentum Score

79/100 (stable)

93/100 (slowing)

Community Health

95/100 (excellent)

85/100 (excellent)

Maturity Index

92/100 (mature)

81/100 (established)

Innovation Score

63/100 (progressive)

69/100 (progressive)

Risk Score (higher is safer)

86/100 (minimal)

81/100 (minimal)

Developer Experience

54/100 (needs-improvement)

Links

🌐 Visit Website View on GitHub

Elasticsearch Strengths

✓ More popular (78,369 stars)
✓ Larger community (2,566 contributors)

Apache Kafka Strengths

✓ More features (4 listed)

When to Use Elasticsearch vs Apache Kafka

Use Elasticsearch when its strengths align better with your stack and team needs, and choose Apache Kafka when its ecosystem, integrations, or cost profile is a better fit.

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More Comparisons

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Data source: GitHub API

Last updated: 10/25/2026