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Open-source alternatives to Azure Event Hubs

Compare community-driven replacements for Azure Event Hubs in event streaming platforms workflows. We curate active, self-hostable options with transparent licensing so you can evaluate the right fit quickly.

Azure Event Hubs logo

Azure Event Hubs

Event Hubs streams millions of events per second with low latency, geo-disaster recovery, and Kafka protocol compatibility for existing workloads.Read more
Event Streaming Platforms
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Key stats

  • 5Alternatives
  • 4Active development

    Recent commits in the last 6 months

  • 4Permissive licenses

    MIT, Apache, and similar licenses

Counts reflect projects currently indexed as alternatives to Azure Event Hubs.

All open-source alternatives

Apache Kafka logo

Apache Kafka

Scalable distributed event streaming platform for real‑time data pipelines

Active developmentPermissive licenseFast to deployJava

Why teams choose it

  • Distributed log architecture with partitioned topics
  • Exactly‑once processing guarantees
  • Native support for Java 11/17 and Scala 2.13

Watch for

Operational complexity requires careful capacity planning

Migration highlight

Log aggregation for microservices

Centralized, ordered event store enables traceability and fault‑tolerant communication between services.

Apache Pulsar logo

Apache Pulsar

Scalable, low‑latency pub‑sub platform for real‑time data streams

Active developmentPermissive licenseFast to deployJava

Why teams choose it

  • Horizontal scalability to millions of topics and messages per second
  • Strong ordering and consistency guarantees
  • Multi‑tenant security with authentication, authorization, and quotas

Watch for

Requires specific Java versions (8, 11, or 17) depending on release

Migration highlight

Streaming telemetry from IoT devices

Collects millions of sensor events per second, stores them durably, and forwards to analytics pipelines with guaranteed ordering.

Fluvio logo

Fluvio

Composable distributed data streaming engine written in Rust

Active developmentPermissive licenseIntegration-friendlyRust

Why teams choose it

  • Rust-native distributed streaming engine with low overhead and high throughput
  • WebAssembly-based Smart Modules for reusable inline stream transformations
  • Native connectors for HTTP, MQTT, Kafka, SQL with extensible CDK framework

Watch for

Smaller ecosystem compared to established platforms like Apache Kafka or Flink

Migration highlight

Real-Time Stock Market Dashboards

Ingest market data feeds, apply WebAssembly transformations for aggregations, and stream to visualization frontends with sub-second latency.

Redpanda logo

Redpanda

Kafka‑compatible streaming platform that’s faster, lighter, and ZooKeeper‑free.

Active developmentFast to deployIntegration-friendlyC++

Why teams choose it

  • Kafka API compatible, drop‑in replacement for existing clients
  • No ZooKeeper or JVM, reducing latency and operational overhead
  • Built in C++ with tiered storage for high throughput

Watch for

Smaller ecosystem of native extensions compared to Apache Kafka

Migration highlight

Real‑time analytics pipeline

Ingests clickstream data at millions of events per second, delivering low‑latency insights to dashboards.

Pravega logo

Pravega

Unlimited, ordered streams for durable real‑time data.

Permissive licenseIntegration-friendlyJava

Why teams choose it

  • Unlimited append‑only streams with strict ordering
  • Durable, high‑performance storage primitive
  • Elastic scaling across distributed nodes

Watch for

Server requires Java 11+, limiting older environments

Migration highlight

Fraud detection

Processes ordered transaction streams in real time to flag suspicious activity.

Choosing a event streaming platforms alternative

Teams replacing Azure Event Hubs in event streaming platforms workflows typically weigh self-hosting needs, integration coverage, and licensing obligations.

  • 4 options are actively maintained with recent commits.

Tip: shortlist one hosted and one self-hosted option so stakeholders can compare trade-offs before migrating away from Azure Event Hubs.