No. 38of 114 ·Integration Platform as a Service Software

Apache Synapse

Windows · Mac · Linux · Self-hosted

Freedom report

Three barsScore 6.5

Free tierA free tier is on its own pricing page
Runs widely3 of 6 device platforms
DocumentedPlans, terms and facts published

Apache Synapse is ranked #38 of 114 in integration platform as a service software on Freedom251, made by Apache Synapse (Wilmington, Delaware, United States). It runs on Linux, macOS, Self-hosted, Windows. There is a free plan.

Apache Synapse plans and pricing

All plans

Apache Synapse Free Free and open source software No paid tiers or usage limits stated synapse.apache.org · 11 Oct 2026

Compared on integration platform as a service software

Free plan: Yes
Workflow orchestration: Yes
Data transformation: Yes
Real-time sync: Yes
On-premises connectors: Yes
API management: Yes

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The record

Product: Apache Synapse is a lightweight, high-performance Enterprise Service Bus with an asynchronous mediation engine for XML, Web Services and REST.
Message formats: It supports XML, SOAP, plain text, binary, Hessian and JSON content formats.
Transports: The site lists HTTP/S, POP3, IMAP, SMTP, JMS, TCP, UDP, VFS, SMS, XMPP and FIX support.
Integration features: Features include load balancing, failover routing, message splitting and aggregation, database lookup and updates, and message throttling and caching.
Extensibility: Synapse can be extended with Java, Spring or scripting languages including JavaScript, Ruby and Groovy.
Security: The feature list includes WS-Security support, and version 3.0.0 added OCSP/CRL certificate validation for HTTP transports.
Monitoring: The product supports statistics collection and JMX monitoring and management.
Configuration: Synapse uses an XML-based configuration language and includes built-in mediators for constructing message flows.
Deployment: The installation guide offers binary and source distributions for Linux, macOS and Windows and recommends Linux for production deployments.
Requirements: The installation guide specifies Java SE Development Kit 1.8.0_141 or higher and says 1 GB of heap is generally sufficient for typical SOAP messages.
Current release: The downloads page lists version 3.0.2, released 10-May-2023, as the latest stable release.
Community support: The project provides user, developer and commits mailing lists with subscription and archive links.
Founded: 2005
Headquarters: Wilmington, Delaware, United States
Price from: Free

Where it ranks on Freedom251

Best Integration Platform as a Service Software in 2026#38 of 114

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Sources

synapse.apache.org· checked 11 Oct 2026
synapse.apache.org/userguide/installation.html· checked 11 Oct 2026
synapse.apache.org/download.html· checked 11 Oct 2026
synapse.apache.org/mail-lists.html· checked 11 Oct 2026