Best Stream Processing Software in 2026
21 stream processing software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
21ranked
15free plans on this page
$0.13/molowest paid tier
3 Oct 2026last checked
#1 Apache Beam Top pick · 8.8 Free plan · Free
#2 Confluent Cloud Runner-up · 8.7 Free plan · Free
#3 Hazelcast Platform Also great · 8.7 Free plan · Free
- Free plan apiLinuxmacOSself-hostedWebWindowsRecognisedDocumentedPlatformsFree planFree trial
- Free planFree trial apiLinuxWeb
- Free plan
- Yes
- Paid from
- 385 /mo
- Deployment model
- cloud
RecognisedDocumentedPlatformsFree planFree trial - Free planFree trial apiLinuxmacOSself-hostedWindows
- Free plan
- Yes
- Deployment model
- hybrid
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free planFree trial apiLinuxself-hostedWeb
- Free plan
- Yes
- Deployment model
- hybrid
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial$0.13/mofirst paid tier About MaterializeVisit site - Free planFree trial apiLinuxmacOSself-hostedWeb
- Free plan
- No
- Deployment model
- hybrid
RecognisedDocumentedPlatformsFree planFree trial$0.23/mofirst paid tier About RisingWaveVisit site - Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Deployment model
- hybrid
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan apiLinuxself-hosted
- Free plan
- Yes
- Deployment model
- self-hosted
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan LinuxmacOSself-hostedWindows
- Free plan
- Yes
- Deployment model
- self-hosted
- SQL processing
- No
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free planFree trial apiLinuxmacOSself-hostedWebWindows
- Free plan
- No
- Paid from
- 199 /mo
RecognisedDocumentedPlatformsFree planFree trial$199/mofirst paid tier About TimeplusVisit site - Free plan apiLinuxmacOSself-hostedWindows
- Free plan
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Deployment model
- self-hosted
- Stateful processing
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan apiLinuxself-hostedWindows
- Free plan
- Yes
- Deployment model
- self-hosted
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan apiLinuxself-hosted
- Free plan
- Yes
- Deployment model
- self-hosted
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan AndroidLinuxmacOSself-hostedWindows
- Free plan
- Yes
RecognisedDocumentedPlatformsFree planFree trial€1666.67/mofirst paid tier About AFL++Visit site - Web
- Free plan
- No
- Deployment model
- cloud
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - WebmacOSLinux
- Deployment model
- hybrid
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - LinuxmacOS
- Deployment model
- self-hosted
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - Free plan
- Free plan
- Yes
- Deployment model
- hybrid
- SQL processing
- Yes
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial -
- Deployment model
- hybrid
- SQL processing
- No
- Stateful processing
- Yes
- Event-time windows
- Yes
RecognisedDocumentedPlatformsFree planFree trial - WebWindowsmacOSLinuxRecognisedDocumentedPlatformsFree planFree trial
-
- Deployment model
- self-hosted
- Stateful processing
- Yes
RecognisedDocumentedPlatformsFree planFree trial
Is your tool on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which stream processing software is ranked first on Specifiction?
Apache Beam is ranked #1 of 21 with a score of 8.8. Confluent Cloud is second and Hazelcast Platform third.
How many of these have a free plan?
15 of the 21 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Materialize has the lowest first paid tier we found: $0.13/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing. Paid placements never change a rank.
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