Alternatives to Esper

18.0

Arroyo

Arroyo is an open-source distributed stream processing engine for stateful computations on data streams, with sub-second results.

Free planOpen sourceWebAPILinux

From $5 a month

VisitDetails

27.9

ES

Estuary

Estuary is a managed data integration platform that combines change data capture, batch, streaming, and app synchronization for analytics, operations, and AI.

Free planWebAPILinux

$0.50 usage-based

VisitDetails

37.2

AD

Apache Druid

Apache Druid is an open-source database for real-time analysis of streaming and batch data.

Free planWebAPILinux

Free plan

VisitDetails

4. 4

   Confluent Cloud

   Confluent Cloud is a managed data streaming platform built around a serverless Apache Kafka engine.

   Free planWebAPILinux
   7.1From $385 a month
   Visit
5. 5LE

   Lenses

   Lenses describes its Operating Fabric as a platform for building, governing, and operating Kafka applications with engineers and AI agents.

   Free planWebAPILinuxmacOS
   7.1From $4 a year
   Visit
6. 6TI

   Timeplus

   Timeplus is a streaming SQL platform for real-time data pipelines in analytics, telemetry, and AI/ML.

   Free planWebAPILinuxmacOS
   7.1From $199 a month
   Visit
7. 7

   Materialize

   Materialize is a SQL-based live data layer for apps and AI agents.

   Free planWebAPILinuxSelf-hosted
   7.0From $1.50 a year
   Visit
8. 8

   RisingWave

   RisingWave is a distributed SQL streaming platform that ingests, transforms, and serves real-time data.

   WebAPILinuxmacOS
   6.7$0.23 usage-based
   Visit
9. 9

   Tinybird Cloud

   Tinybird Cloud is a managed real-time data platform for building analytics features and serving data through APIs.

   Free planWebAPI
   6.7From $49 a month
   Visit
10. 10AS

    Apache Storm

    Apache Storm is a free, open-source system for processing unbounded data streams in real time.

    Free planWebAPILinuxmacOS
    6.6Free plan
    Visit
11. 11

    Decodable

    Decodable is a managed platform for real-time ETL, ELT, and stream processing, built around Apache Flink and Debezium.

    Free planWebAPISelf-hosted
    6.6From $0.10 a year
    Visit
12. 12

    Apache Pinot

    Apache Pinot is an open-source distributed OLAP datastore for real-time analytics and user-facing workloads.

    Free planWebAPISelf-hosted
    6.4Free plan
    Visit
13. 13

    Apache Spark

    Apache Spark is a free, open-source engine for large-scale data analytics.

    Free planAPILinuxmacOSSelf-hosted
    6.4Free plan
    Visit
14. 14KS

    Kafka Streams

    Kafka Streams is a client library for building applications and microservices that read and write data in Kafka clusters.

    Free planLinuxmacOSSelf-hostedWindows
    6.2Free plan
    Visit
15. 15

    Apache Flink

    Apache Flink is a framework and distributed processing engine for stateful computations over bounded and unbounded data streams.

    Free planAPILinuxSelf-hosted
    6.1Free plan
    Visit
16. 16PL

    Pathway Live Data Framework

    Pathway Live Data Framework is a Python framework for building analytics and AI data pipelines over stored data and live streams.

    Free planAPISelf-hosted
    6.1Free plan
    Visit
17. 17

    Ververica Platform

    Ververica Platform combines stream and batch processing in one runtime for enterprise production workloads.

    Free planWebAPISelf-hosted
    6.1Free plan
    Visit
18. 18

    Apache Samza

    Apache Samza is a free, self-hosted framework for processing live data streams and building applications that maintain state.

    Free planAPILinuxSelf-hosted
    6.0Free plan
    Visit
19. 19QS

    Quix Streams

    Quix Streams is a free, open-source Python library for processing Kafka data and building real-time streaming applications.

    Free planLinuxSelf-hosted
    5.9Free plan
    Visit
20. 20SI

    Siddhi

    Siddhi is a free, open-source stream and complex event processing engine for building event-driven applications.

    APILinuxmacOSSelf-hosted
    5.9
    Visit
21. 21

    Amazon Managed Service for Apache Flink

    Amazon Managed Service for Apache Flink runs Apache Flink applications in the cloud to transform and analyze streaming data in real time.

    WebAPI
    5.5
    Visit
22. 22

    Azure Stream Analytics

    Azure Stream Analytics is a web service for processing streaming data with stateful processing, SQL processing and event-time windows.

    Web
    5.1
    Visit
23. 23TS

    TIBCO Streaming

    WebLinuxmacOSWindows
    5.1
    Visit
24. 24AC

    Alibaba Cloud Realtime Compute for Apache Flink

    Alibaba Cloud Realtime Compute for Apache Flink is a cloud service for processing data streams with Apache Flink.

    Web
    5.0
    Visit
25. 25GC

    Google Cloud Dataflow

    Google Cloud Dataflow is a cloud-deployed data processing service accessed through the web.

    Web
    4.9
    Visit

Back to Esper