Apache Synapse
Apache Synapse: A flexible self-hosted integration framework for teams that can manage developer-led mediation. Ranked #85 of 110 in Integration Platform as a Service Software by our editors (5.2/10); pricing: Free plan; best for open-source mediation and API routing.
At a glance
- Editor score5.2 / 10
- PricingFree plan
- Best forOpen-source mediation and API routing
- Free planYes
- Paid fromFree
- Founded2005 · Wilmington, Delaware, United States
- Facts checked22 Sep 2026
Where it wins
- Routes and transforms messages across HTTP/S, JMS, AMQP, FIX, and more
- Supports reusable sequences, REST APIs, validation, logging, and filtering
- Adds scheduled tasks, database operations, message stores, and custom mediators
Where it doesn't
- Self-hosted deployment puts runtime operations on the adopting team
- Community and documentation support may require substantial self-service
- Custom mediation extends through Java or scripting languages rather than visual tools
Our verdict on Apache Synapse
Apache Synapse is an open-source enterprise service bus and message mediation framework for teams that need to route, transform, validate, log, and forward messages between clients and backend services. Its audience includes small, mid-market, and enterprise organizations with developer resources and a preference for self-managed deployment. Synapse runs as a standalone Java process or as a WAR application in a servlet container or J2EE application server, and supports Windows, macOS, Linux, and self-hosted environments.
Its strongest fit is breadth across mediation and transport handling. Proxy services can mediate and forward service requests, while reusable sequences and endpoints support repeatable integration logic. REST API definitions include request and response mediation, and message flows can apply routing, filtering, validation, logging, and transformation. Published integrations include HTTP/S, JMS, VFS, AMQP, FIX, mail, TCP, UDP, XMPP, FTP, SFTP, and WebDAV. Database lookup and update support, connection pooling, scheduled tasks, event sources, message stores, and message processors extend the platform beyond basic API routing.
Apache Synapse is most suitable when an organization wants open-source control over mediation and can operate a self-hosted integration layer. JMX monitoring and statistics collection provide operational visibility, while custom mediators allow Java or scripting-language extensions for specialized workflows. The tradeoff is a developer-oriented operating model: teams take responsibility for deployment and runtime management, and support is centered on community and documentation channels. Organizations seeking a managed integration service or a more visual, guided implementation should consider alternatives; teams comfortable with self-managed, protocol-rich mediation should find Synapse the more natural fit.
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Apache Synapse pricing
Apache Synapse fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Deployment model | Not verified |
| Connector count | Not verified |
| Workflow orchestration | Yes |
| Data transformation | Yes |
| Real-time sync | Yes |
| On-premises connectors | Yes |
| API management | Yes |
| Deployment | Self-hosted |
| Platforms | Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 12 integrations: HTTP/S, JMS, VFS, AMQP, FIX, Mail … |
| Pricing | Free plan |
| Website | synapse.apache.org |
| Facts checked | 22 Sep 2026 |
Apache Synapse integrations
Apache Synapse lists 12 integrations on its own site.
- HTTP/S
- JMS
- VFS
- AMQP
- FIX
- TCP
- UDP
- XMPP
- FTP
- SFTP
- WebDAV
Alternatives to Apache Synapse
- ZapierA broad no-code automation platform with strong workflow depth and usage limits.9.4
- MakeA broad no-code automation platform with flexible routing and a low paid entry point.9.2
- n8nA flexible workflow platform for technical teams that need code and deployment choice.9.0
See all Apache Synapse alternatives →
Also Ranked In
Apache Synapse is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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