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Head-to-head · Enterprise Service Bus Software

Mule ESB vs Apache Synapse

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Mule ESB #2 in Enterprise Service Bus Software 9.1/10 30-day trial Free trial✓ 0 of 4 features Visit MuleSoft
Apache Synapse #4 in Enterprise Service Bus Software 8.9/10 Free plan Free plan✓ 0 of 4 features Visit Apache Synapse

Mule ESB leads on 0 checks, Apache Synapse on 1, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMule ESB · 9.1/10
  • Free planonly Apache Synapse
  • Free trialonly Mule ESB

Mule ESB scores higher on our rubric for enterprise service bus software: 9.1 against 8.9 out of 10; our editors rank them #2 and #4.

Apache Synapse offers free plan; Mule ESB doesn't.

Mule ESB is the better fit for enterprises needing managed, hybrid integration. Apache Synapse is the better fit for teams wanting a free, self-hosted mediation bus.

  • Mule ESB fits best

    Enterprises needing managed, hybrid integration

  • Apache Synapse fits best

    Teams wanting a free, self-hosted mediation bus

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Side by side

Feature Mule ESB 9.1/10 Visit ↗ Apache Synapse 8.9/10 Visit ↗
At a glance
Editor score 9.1 8.9
Ranking #2 in Enterprise Service Bus Software #4 in Enterprise Service Bus Software
Best for Enterprises needing managed, hybrid integration Teams wanting a free, self-hosted mediation bus
Pricing model Paid Free
Starting price $2,000/mo Free plan
Free plan — ✓ (best)
Free trial 30 days —
Deployment Cloud, Self-hosted Self-hosted
Platforms Web Windows, macOS, Linux
Support Docs Community, Docs
Integrations 450+ integrations 12 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Mule ESB 0/4 · Apache Synapse 0/4
Message transformation Not checked yet Not checked yet
Queue integration Not checked yet Not checked yet
High availability Not checked yet Not checked yet
Visual flow designer Not checked yet Not checked yet
Specs
Deployment model Not checked yet Not checked yet
Protocol support Not checked yet Not checked yet
Our review
Pros
  • Routes and orchestrates integration flows with DataWeave transformations.
  • Supports cloud, hybrid, Runtime Fabric, and on-premises deployments.
  • Offers reusable and custom connectors, plus API gateway policy controls.
  • Reusable mediation sequences, proxy services, and REST API mediation
  • Routing, filtering, validation, logging, and message transformation
  • HTTP/S, JMS, AMQP, FIX, file, mail, and network transports
Cons
  • The published starting price is $2,000/month with annual billing.
  • There is no free plan; the free trial lasts 30 days.
  • Current package pricing is not a standalone Mule ESB license.
  • Deployment is self-hosted rather than vendor-managed
  • Setup requires a standalone Java process or application-server deployment
  • Support channels are limited to community resources and documentation
Our verdict

Mule ESB, now documented as Mule runtime engine, is an integration runtime for connecting applications, services, APIs, databases, and devices. It is aimed at organizations that need to route messages and transform data across cloud and…

Read the review →

Apache Synapse is an open-source enterprise service bus and message mediation framework for teams integrating clients, APIs, and backend services. It provides proxy services, reusable mediation sequences, REST API request and response…

Read the review →
  1. Mule ESBEnterprise Service Bus Software 9.130-day trial
  2. Apache SynapseEnterprise Service Bus Software 8.9Free plan

Strengths and trade-offs

  • Mule ESB — where it wins

    • Routes and orchestrates integration flows with DataWeave transformations.
    • Supports cloud, hybrid, Runtime Fabric, and on-premises deployments.
    • Offers reusable and custom connectors, plus API gateway policy controls.

    Where it doesn't

    • The published starting price is $2,000/month with annual billing.
    • There is no free plan; the free trial lasts 30 days.
    • Current package pricing is not a standalone Mule ESB license.

  • Apache Synapse — where it wins

    • Reusable mediation sequences, proxy services, and REST API mediation
    • Routing, filtering, validation, logging, and message transformation
    • HTTP/S, JMS, AMQP, FIX, file, mail, and network transports

    Where it doesn't

    • Deployment is self-hosted rather than vendor-managed
    • Setup requires a standalone Java process or application-server deployment
    • Support channels are limited to community resources and documentation

More comparisons

All enterprise service bus software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update