Best Stream Processing Engines Tools

Explore leading tools in the Stream Processing Engines category, including open-source options and SaaS products. Compare features, use cases, and find the best fit for your workflow.

9 open-source projects · 10+ SaaS products

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Top open-source Stream Processing Engines

These projects are active, self-hostable choices for knowledge management teams evaluating alternatives to SaaS tools.

View all 9 open-source options

Pathway

Unified Python framework for real‑time, batch, and LLM pipelines

Stream Processing Engines

Stars: 50,549
License: Unknown
Last commit: 3 days ago

PythonActive

Apache Spark

Fast, unified engine for large-scale data analytics

Stream Processing Engines+1

Stars: 42,415
License: Apache-2.0
Last commit: 3 days ago

ScalaActive

Apache Flink

Unified engine for high-throughput, low-latency stream and batch processing

Stream Processing Engines

Stars: 25,543
License: Apache-2.0
Last commit: 3 days ago

JavaActive

RisingWave

Real-time streaming platform with native Iceberg lakehouse support

Stream Processing Engines

Stars: 8,565
License: Apache-2.0
Last commit: 3 days ago

RustActive

Redpanda Connect

High-performance resilient stream processor with declarative pipelines

Stream Processing Engines

Stars: 8,516
License: Unknown
Last commit: 3 days ago

GoActive

Apache Beam

Unified model for batch and streaming data pipelines

Stream Processing Engines

Stars: 8,382
License: Apache-2.0
Last commit: 3 days ago

JavaActive

Most starred project

Pathway

50,549★

Unified Python framework for real‑time, batch, and LLM pipelines

Popular SaaS Platforms to Replace

Understand the commercial incumbents teams migrate from and how many open-source alternatives exist for each product.

View all 10+ SaaS options

Aiven for Apache Flink

Fully managed Apache Flink service by Aiven.

Stream Processing Engines

Alternatives tracked

9 alternatives

Amazon Managed Service for Apache Flink

Serverless Apache Flink for real-time stream processing on AWS.

Stream Processing Engines

Alternatives tracked

9 alternatives

Azure Stream Analytics

Serverless real-time analytics with SQL on streams.

Stream Processing Engines

Alternatives tracked

9 alternatives

Confluent Cloud

Fully managed Apache Kafka service for real-time event streaming and data integration

Stream Processing Engines

Alternatives tracked

9 alternatives

Decodable

Managed stream processing platform built on Apache Flink.

Stream Processing Engines

Alternatives tracked

9 alternatives

Google Cloud Dataflow

Fully managed Apache Beam service for batch and streaming pipelines.

Stream Processing Engines

Alternatives tracked

9 alternatives

Most compared product

Aiven for Apache Flink

9 open-source alternatives

Spin up Flink clusters with a web SQL editor and integrations to build streaming apps and analytics quickly.

Leading hosted platforms

Aiven for Apache Flink, Amazon Managed Service for Apache Flink, Azure Stream Analytics

Frequently replaced when teams want private deployments and lower TCO.

Explore related categories

Browse neighbouring categories in Data Engineering to widen your evaluation.