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Head-to-head · Event Streaming Platforms

Aiven for Apache Kafka vs Apache Pulsar

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score Aiven for Apache Kafka #3 in Event Streaming Platforms 9.0/10 Free plan · 30-day trial Free planFree trial✓ 2 of 2 features Visit Aiven
Apache Pulsar #6 in Event Streaming Platforms 8.7/10 Free plan Free plan✓ 2 of 2 features Visit Apache Pulsar

Aiven for Apache Kafka leads on 0 checks, Apache Pulsar on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreAiven for Apache Kafka · 9.0/10
  • Free planboth
  • Free trialonly Aiven for Apache Kafka

Aiven for Apache Kafka scores higher on our rubric for event streaming platforms: 9.0 against 8.7 out of 10; our editors rank them #3 and #6.

On deployment model, Aiven for Apache Kafka gives you Hybrid where Apache Pulsar offers Self-hosted.

Aiven for Apache Kafka is the better fit for teams wanting affordable managed Kafka. Apache Pulsar is the better fit for teams needing open-source multi-tenant streaming.

  • Aiven for Apache Kafka fits best

    Teams wanting affordable managed Kafka

  • Apache Pulsar fits best

    Teams needing open-source multi-tenant streaming

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Aiven for Apache Kafka 9.0/10 Visit ↗ Apache Pulsar 8.7/10 Visit ↗
At a glance
Editor score 9.0 8.7
Ranking #3 in Event Streaming Platforms #6 in Event Streaming Platforms
Best for Teams wanting affordable managed Kafka Teams needing open-source multi-tenant streaming
Pricing model Free plan + paid Free
Starting price $35/mo Free plan
Free plan ✓ ✓
Free trial 30 days —
Deployment Cloud Self-hosted
Platforms Web Windows, macOS, Linux
Support Community, Docs Community, Docs
Integrations 4 integrations 3 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Aiven for Apache Kafka 2/2 · Apache Pulsar 2/2
Stream processing ✓ ✓
Schema registry ✓ ✓
Specs
Deployment model Hybrid Self-hosted
Maximum retention 3 days Not checked yet
Delivery guarantee Both Both
Connectors listed 36 connectors Not checked yet
Supported client languages Java, Scala, Python, Node.js Java, Go, Python, C++, C#/.NET, Node.js, WebSocket
Our review
Pros
  • Free plan includes Schema Registry and REST proxy
  • 36 connectors plus Kafka Connect and MirrorMaker 2 compatibility
  • TLS, SASL, ACLs, and client-certificate authentication
  • Persistent storage, transactions, schemas, and multiple subscription types
  • Multi-tenancy, access control, and geo-replication across clusters
  • Clients, connectors, and deployment options across major environments
Cons
  • Free plan is limited to 250 KiB/s and five topics
  • Retention is limited to three days on Free and Developer
  • Developer pricing and retention vary by cloud and region
  • Self-hosted deployment places infrastructure management on the team
  • Its broad feature set may exceed the needs of simple streaming projects
  • AI features are not included
Our verdict

Aiven for Apache Kafka is a fully managed Apache Kafka service for event-driven applications, data pipelines, and stream-processing systems. It provides managed clusters with configurable topics, partitions, and retention, alongside…

Read the review →

Apache Pulsar is an open-source messaging and streaming platform for server-to-server communication and event-driven applications. It is designed for organizations ranging from small companies to large enterprises, particularly teams that…

Read the review →
  1. Aiven for Apache KafkaEvent Streaming Platforms 9.0Free plan · 30-day trial
  2. Apache PulsarEvent Streaming Platforms 8.7Free plan

Strengths and trade-offs

  • Aiven for Apache Kafka — where it wins

    • Free plan includes Schema Registry and REST proxy
    • 36 connectors plus Kafka Connect and MirrorMaker 2 compatibility
    • TLS, SASL, ACLs, and client-certificate authentication

    Where it doesn't

    • Free plan is limited to 250 KiB/s and five topics
    • Retention is limited to three days on Free and Developer
    • Developer pricing and retention vary by cloud and region

  • Apache Pulsar — where it wins

    • Persistent storage, transactions, schemas, and multiple subscription types
    • Multi-tenancy, access control, and geo-replication across clusters
    • Clients, connectors, and deployment options across major environments

    Where it doesn't

    • Self-hosted deployment places infrastructure management on the team
    • Its broad feature set may exceed the needs of simple streaming projects
    • AI features are not included
  • Aiven for Apache Kafka9.0/10 · Free plan · 30-day trial

    Managed Kafka with a free plan, schema tools, connectors, replication, and hybrid deployment.

    Visit AivenFull verdict →
  • Apache Pulsar8.7/10 · Free plan

    Open-source streaming with multi-tenancy, replication, storage, and processing built in.

    Visit Apache PulsarFull verdict →

More comparisons

All event streaming platforms comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update