Zerq vs. WSO2: Enterprise API Gateway Comparison
WSO2 API Manager is one of the few enterprise API management platforms that is genuinely open source. For teams that prioritize source transparency and self-hosting, it has long been a credible option.
For regulated enterprises, the core question is not only feature coverage but operating burden: how much specialist effort is required to deliver compliant, auditable, production-grade outcomes.
Feature comparison
| Capability | Zerq | WSO2 |
|---|---|---|
| Self-hosted / on-premises | ✅ Full support | ⚠️ Available |
| Air-gapped deployment | ✅ Yes | ⚠️ Limited |
| Native workflow builder | ✅ Visual, no-code | ⚠️ Mediation sequences (developer-heavy) |
| Developer portal | ✅ Included | ⚠️ Available |
| Role-based access (RBAC) | ✅ Full, with separation of duties | ⚠️ Partial |
| Per-partner access control | ✅ Native | ⚠️ Complex configuration |
| Full audit trail | ✅ Included | ⚠️ Requires configuration |
| AI agent access (MCP) | ✅ Native, same gateway | ⚠️ Not available |
| Platform automation (ops) | ✅ Management MCP included | ⚠️ Not available |
| No specialist runtime required | ✅ Single Go binary | ⚠️ Java/OSGi runtime required |
| Observability | ✅ Included | ⚠️ Requires ELK or external stack |
| Predictable enterprise pricing | ✅ All-inclusive licensing | ⚠️ Open source + commercial support costs |
Where WSO2 works well
WSO2 is a capable choice for teams that require open-source software and have the engineering depth to operate it. It covers the API lifecycle, includes a developer portal, and can be fully self-hosted.
For organizations already experienced with WSO2's Java-based ecosystem and willing to absorb the ongoing operational load, it can be made to work at enterprise scale.
Where WSO2 falls short for regulated enterprises
The Java/OSGi runtime is operationally heavy
Running WSO2 in production requires specialist expertise across JVM tuning, OSGi behavior, scaling, and reliability operations. This creates a staffing dependency that is expensive to maintain.
Workflow logic is developer-heavy
Routing, transformation, and custom flow logic are typically implemented using XML-based mediation sequences, which increases engineering effort for routine gateway changes.
Audit trail requires extra configuration
Compliance-grade audit typically depends on integrating and maintaining an external logging stack and validating retention and event completeness.
No native AI agent access model
WSO2 does not offer a native one-gateway model for apps and AI agents, so teams often create separate paths for AI usage and introduce governance gaps.
Per-partner access control can be complex
Strict partner isolation usually requires careful, non-trivial configuration. In regulated environments, complexity in access models increases compliance risk.
Open-source and support tiers create uncertainty
Teams often start with open source and later discover commercial support dependencies for production-critical requirements.
Observability depends on external tooling
Production observability typically requires separate integration and operation of ELK, Splunk, or equivalent external components.
How Zerq is different
Single binary, no Java runtime
Zerq gateway core is a single Go binary with straightforward deployment patterns in Docker Compose and Kubernetes.
Visual workflow configuration
Routing, transformation, branching, and error handling are configured visually so operations teams can own change velocity without specialist code paths.
Compliance-grade audit included
Every request and configuration change is captured in structured audit data with direct queryability for compliance workflows.
Native AI agent access
AI tools and apps share one gateway, one credential model, and one audit trail.
Observability included
Prometheus-ready metrics, structured logs, and dashboards are part of the platform and integrate into existing SIEM workflows.
Predictable all-inclusive licensing
One annual licensing model covers the full platform without module add-ons or per-call billing complexity.
On open source
Open source offers transparency and control, but enterprise-scale operations frequently require more engineering investment than expected. Zerq is not open source, but it is fully self-hosted with no external runtime dependency, so you retain deployment control without the same operational burden.
Who should choose WSO2
WSO2 is a fit for teams with deep Java/OSGi and WSO2 expertise, open-source policy requirements, and sufficient engineering bandwidth to run external observability and audit integrations.
Who should choose Zerq
Zerq is a fit for regulated enterprises that want lower operating burden, visual workflow control, built-in compliance audit, native AI agent governance, and predictable enterprise licensing.
Related reading: On-Premises vs Cloud API Gateway · How AI Agents Authenticate to Enterprise APIs Securely