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Best Enterprise Service Bus Software in 2026

  1. 1

    Apache Camel

    Free plan Open source APILinuxMac+2

    Apache Camel combines broad connector and route options with integration and security capabilities. Check the Java requirements and LTS support window for the release you plan to use.

    9.3 Free plan Visit site
  2. 2

    Apache Synapse

    by Apache Synapse
    Free plan LinuxMacSelf-hosted+1

    Apache Synapse provides a broad, configurable mediation layer without paid tiers or stated usage limits.

    7.6 Free plan Visit site
  3. 3

    InterSystems IRIS

    by InterSystems IRIS
    Free plan APILinuxMac+3

    InterSystems IRIS combines database, analytics, integration and deployment capabilities for complex application environments.

    7.5 Pricing on request Visit site
  4. 4

    IBM App Connect

    Free trial APILinuxSelf-hosted+2

    App Connect covers visual integration design as well as toolkit-based development and multiple deployment settings. Review its plan units, local pricing and security configuration when assessing fit.

    6.5 From $2,544 · 30-day trial Visit site
  5. 5

    Mule ESB

    by Mule ESB
    Free trial APISelf-hostedWeb

    Anypoint Platform brings API development, integrations and automation into one offering with multiple deployment options.

    6.1 From $2,000/mo (annual) · 30-day trial Visit site
  6. 6

    OpenCelium

    Free plan Web
    5.8 Free plan Visit site
  7. 7

    NEC WebOTX Application Server

    Paid LinuxSelf-hostedWeb+1

    WebOTX Application Server combines Java enterprise standards, failover features, browser administration, and tested database connectivity.

    5.7 Pricing on request Visit site
  8. 8

    Oracle Service

    Paid AndroidAPIiPhone+1
    5.6 Visit site
  9. 9

    Oracle WebCenter Content

    by Oracle WebCenter Content
    Paid AndroidAPIiPhone+4

    Choose WebCenter Content if your organization needs document capture, imaging, records controls, and security across transactional processes.

    5.5 Visit site
  10. 10

    VICO OpenESB Enterprise

    by VICO OpenESB Enterprise
    Paid APILinuxSelf-hosted+1

    VICO OpenESB Enterprise combines API integration, process orchestration, connectors, observability, and security for mixed environments.

    5.0 Pricing on request Visit site
  11. 11

    Microsoft BizTalk Server

    Paid Windows
    4.3 Pricing on request Visit site
  12. 12

    Talend ESB

    Paid LinuxMacWeb+1
    4.3 Pricing on request Visit site
  13. 13

    Red Hat 3scale API Management

    Paid Web
    3.9 Pricing on request Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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