Hazelcast Platform vs Feldera

Hazelcast Platform8.3Visit Feldera7.4Visit

Higher score Hazelcast Platform #10 in Stream Processing Software 8.3/10 Free plan Free plan✓ 3 of 3 features Visit Hazelcast

vs

Feldera #20 in Stream Processing Software 7.4/10 Free plan Free plan✓ 3 of 3 features Visit Feldera

• Hazelcast Platform fits best

  Teams needing streaming plus distributed state

• Feldera fits best

  SQL-first streaming and incremental views

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Side by side

Feature	Hazelcast Platform 8.3/10 Visit ↗	Feldera 7.4/10 Visit ↗
At a glance
Editor score	8.3	7.4
Ranking	#10 in Stream Processing Software	#20 in Stream Processing Software
Best for	Teams needing streaming plus distributed state	SQL-first streaming and incremental views
Pricing model	Free plan + paid	Free plan + paid
Starting price	—	—
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Self-hosted	Cloud, Self-hosted
Platforms	Windows, macOS, Linux	Web, Windows, macOS, Linux
Support	Tickets, Community, Docs · 24/7	Email, Community, Docs
Integrations	30+ integrations	13 integrations
Built for	Mid-market, Enterprise	Mid-market, Enterprise
Features Hazelcast Platform 3/3 · Feldera 3/3
SQL processing	✓	✓
Stateful processing	✓	✓
Event-time windows	✓	✓
Specs
Deployment model	Hybrid	Hybrid
Supported languages	Java, SQL	SQL
Source connectors	Not checked yet	14
Our review
Pros	Stream processing with SQL windows, joins, and stateful aggregations Distributed in-memory storage supports real-time application architectures Broad connectors and exactly-once or at-least-once guarantees	Full SQL with joins, windows, aggregations, and recursive queries Incremental updates for inserts, updates, and deletes 14 connectors across streaming, databases, files, and data lakes
Cons	Enterprise Edition pricing requires contacting Hazelcast Supported programming languages are Java and SQL The platform may exceed the needs of teams seeking narrow stream processing	Open source edition is limited to a single node and container Enterprise pricing is custom Online sandbox pipelines shut down after 24 hours
Our verdict	Hazelcast Platform combines a distributed stream-processing engine with an in-memory data store for real-time applications. It is aimed at teams that need streaming and distributed state in one self-managed platform, with support for… Read the review →	Feldera is an incremental view maintenance engine for SQL pipelines. It continuously processes inserts, updates, and deletes while maintaining tables and views without recomputing unchanged data. Its SQL support includes joins,… Read the review →

Strengths and trade-offs

• Hazelcast Platform — where it wins

  • Stream processing with SQL windows, joins, and stateful aggregations
  • Distributed in-memory storage supports real-time application architectures
  • Broad connectors and exactly-once or at-least-once guarantees

  Where it doesn't

  • Enterprise Edition pricing requires contacting Hazelcast
  • Supported programming languages are Java and SQL
  • The platform may exceed the needs of teams seeking narrow stream processing

• Feldera — where it wins

  • Full SQL with joins, windows, aggregations, and recursive queries
  • Incremental updates for inserts, updates, and deletes
  • 14 connectors across streaming, databases, files, and data lakes

  Where it doesn't

  • Open source edition is limited to a single node and container
  • Enterprise pricing is custom
  • Online sandbox pipelines shut down after 24 hours

• Hazelcast Platform8.3/10 · Free plan

  A strong fit for teams combining streaming, SQL, state, and distributed storage.

  Visit HazelcastFull verdict →
• Feldera7.4/10 · Free plan

  A SQL-first engine for maintaining continuously updated views and pipelines.

  Visit FelderaFull verdict →