# Emissary vs WSO2 API Manager

| Attribute | Emissary | WSO2 API Manager |
|---|---|---|
| **vioscaleAI score** | 51.3 (54% (medium)) | 71 (23% (low)) |
| activity.commits_last_30d | 56 | - |
| adoption.dependent_repos | 4 | - |
| adoption.github_stars | 4,521 | - |
| content.faq | `[{"answer":"An open-source, CNCF incubation project providing a Kubernetes-native API gateway with Layer 7 load balancing and ingress capabilities for microservices, built on Envoy Proxy. It is indexed under API Gateways.","source":"https://emissary-ingress.dev/","question":"What is Emissary?","confidence":0.6},{"answer":"Emissary is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://emissary-ingress.dev/","question":"Is Emissary free to use?","confidence":0.6},{"answer":"Yes. Emissary can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://emissary-ingress.dev/","question":"Can Emissary be self-hosted?","confidence":0.6},{"answer":"We have confirmed 7 integrations for Emissary, including Consul, Linkerd, Istio, Knative, Grafana, Prometheus and Datadog. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://emissary-ingress.dev/","question":"What does Emissary integrate with?","confidence":0.6},{"answer":"Yes. Emissary is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/emissary-ingress/emissary","question":"Is Emissary open source?","confidence":0.95}]` | `[{"answer":"A self-hosted API management solution providing gateway functionality, authentication, rate limiting, and protocol support for REST, GraphQL, gRPC, and other APIs. Includes AI/LLM traffic management with semantic caching and policy enforcement. It is indexed under API Gateways.","source":"https://wso2.com/api-manager/","question":"What is WSO2 API Manager?","confidence":0.6},{"answer":"WSO2 API Manager is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"http://wso2.com/asgardeo/pricing-old/","question":"Is WSO2 API Manager free to use?","confidence":0.6},{"answer":"WSO2 API Manager supports the web, Windows, macOS and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://wso2.com/api-manager/","question":"What platforms does WSO2 API Manager support?","confidence":0.6},{"answer":"Yes. WSO2 API Manager can be deployed hybrid, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://wso2.com/api-manager/","question":"Can WSO2 API Manager be self-hosted?","confidence":0.6},{"answer":"We have confirmed 8 integrations for WSO2 API Manager, including OpenAI, Anthropic, AWS Bedrock, Google Gemini, Mistral, Azure Content Safety, Moesif and Azure AI. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://wso2.com/api-manager/","question":"What does WSO2 API Manager integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for WSO2 API Manager. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as WSO2 API Manager not holding them. Always confirm compliance directly before you rely on it.","source":"https://wso2.com/security","question":"What security certifications does WSO2 API Manager have?","confidence":0.7}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | A gateway built on Envoy Proxy that provides Layer 7 load balancing, ingress traffic management with support for multiple protocols including gRPC and HTTP/2, and Kubernetes-native configuration through declarative routing policies. | WSO2 API Manager enables organizations to build and manage APIs with features including API versioning, policy enforcement, developer portals, Kubernetes integration, and advanced traffic management. The platform supports OpenAPI standards and provides tools for API testing, monitoring, and access control. |
| features.capabilities | `{"mtls":true,"hosting":"self","k8s_native":true,"grpc_support":true,"observability":true,"rate_limiting":true}` | `{"hosting":"both","k8s_native":true,"oauth_oidc":true,"grpc_support":true,"monetization":true,"observability":true,"pricing_model":"free_open_source","rate_limiting":true,"graphql_gateway":true,"developer_portal":true,"plugin_ecosystem":"extensive","architecture_model":"open_source_proxy","request_transformation":true,"pii_redaction_and_data_masking_in_flight":true,"custom_rate_limiting_by_user_or_tenant_id":true,"universal_api_key_for_100_plus_llm_providers":true,"auto_fallback_routing_on_rate_limit_or_downtime":true,"organization_wide_cost_tracking_and_chargebacks":true,"semantic_caching_for_repeat_queries_and_cost_savings":true}` |
| integrations.count | 7 | 600 |
| integrations.list | `[{"name":"Consul"},{"name":"Linkerd"},{"name":"Istio"},{"name":"Knative"},{"name":"Grafana"},{"name":"Prometheus"},{"name":"Datadog"}]` | `[{"name":"OpenAI"},{"name":"Anthropic"},{"name":"Azure OpenAI"},{"name":"AWS Bedrock"},{"name":"Google Gemini"},{"name":"Mistral"},{"name":"AWS Bedrock Guardrails"},{"name":"Azure Content Safety"},{"name":"Moesif"},{"name":"Azure AI"},{"name":"Mistral AI"}]` |
| language.primary | Python | - |
| license.spdx | Apache-2.0 | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | - | `{"cli":true,"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://emissary-ingress.dev/","retrievedAt":"2026-10-13T13:52:57.215Z"}` | `{"type":"open_source","plans":[{"free":true,"name":"Self-Hosted","summary":"Apache 2.0 licensed open source. No per-gateway fees or usage caps.","features":["Full lifecycle API management","Design and publish REST, GraphQL, WebSocket, Webhook APIs","Developer portal with try-it console","Multi-gateway support","Kubernetes and Docker deployment","Air-gapped environments","Distributed rate limiting and caching","API analytics","LLM gateway with multi-model routing","MCP gateway and tools discovery"],"contactSales":false}],"summary":"Free and open source. No per-gateway fees or usage caps.","freeTier":true,"sourceUrl":"http://wso2.com/asgardeo/pricing-old/","retrievedAt":"2026-08-13T16:53:43.456Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 18 | - |
| release.history | `[{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v4.1.0","date":"2026-05-19T21:35:22Z","type":"stable","version":"v4.1.0"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v4.1.0-rc.0","date":"2026-05-01T19:56:39Z","type":"prerelease","version":"v4.1.0-rc.0"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v4.0.1","date":"2026-03-26T22:54:46Z","type":"stable","version":"v4.0.1"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v4.0.1-rc.0","date":"2026-04-30T20:43:30Z","type":"prerelease","version":"v4.0.1-rc.0"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v4.0.0-rc.2","date":"2026-03-06T16:28:04Z","type":"prerelease","version":"v4.0.0-rc.2"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v4.0.0-rc.1","date":"2025-12-02T19:04:29Z","type":"prerelease","version":"v4.0.0-rc.1"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v3.10.0","date":"2025-07-29T17:20:40Z","type":"stable","version":"v3.10.0"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v3.9.1","date":"2023-11-20T16:00:55Z","type":"stable","version":"v3.9.1"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/chart/v8.9.1","date":"2023-11-20T15:59:12Z","type":"stable","version":"chart/v8.9.1"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v3.9.0","date":"2023-11-13T12:42:42Z","type":"stable","version":"v3.9.0"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/chart/v8.9.0","date":"2023-11-13T12:40:29Z","type":"stable","version":"chart/v8.9.0"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v3.8.2","date":"2023-10-11T14:11:25Z","type":"stable","version":"v3.8.2"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/chart/v8.8.2","date":"2023-10-11T14:09:30Z","type":"stable","version":"chart/v8.8.2"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v3.8.1","date":"2023-09-18T14:54:43Z","type":"stable","version":"v3.8.1"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/chart/v8.8.1","date":"2023-09-18T14:53:18Z","type":"stable","version":"chart/v8.8.1"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v3.8.0","date":"2023-08-29T12:30:13Z","type":"stable","version":"v3.8.0"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/chart/v8.8.0","date":"2023-08-29T12:28:24Z","type":"stable","version":"chart/v8.8.0"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v3.7.2","date":"2023-07-25T17:22:42Z","type":"stable","version":"v3.7.2"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/chart/v8.7.2","date":"2023-07-25T17:20:17Z","type":"stable","version":"chart/v8.7.2"},{"url":"https://github.com/emissary-ingress/emissary/releases/tag/v3.7.1","date":"2023-07-13T17:36:17Z","type":"stable","version":"v3.7.1"}]` | - |
| reliability.status_page | - | yes |
| security.disclosure_policy | - | yes |
| security.gdpr | - | yes |
| security.hipaa | - | yes |
| security.iso27001 | - | yes |
| security.pci | - | yes |
| security.scorecard | 5.5 | - |
| security.soc2 | - | yes |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Femissary-ingress%2Femissary%2Fv3&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (API Gateways)

| Capability | Emissary | WSO2 API Manager |
|---|:--:|:--:|
| **Deployment** |  |  |
| Hosting | Self-hosted only | Cloud + self-hosted |
| Kubernetes-native | ✓ | ✓ |
| **Traffic** |  |  |
| Rate limiting | ✓ | ✓ |
| Request/response transformation | - | ✓ |
| **Security** |  |  |
| OAuth2 / OIDC / JWT | - | ✓ |
| Mutual TLS | ✓ | - |
| **Protocols** |  |  |
| GraphQL gateway | - | ✓ |
| gRPC support | ✓ | ✓ |
| **Delivery** |  |  |
| Developer portal | - | ✓ |
| Monetization | - | ✓ |
| **Ecosystem** |  |  |
| Plugin ecosystem | - | Extensive |
| **Insight** |  |  |
| Observability | ✓ | ✓ |

*Source: vioscaleAI. Generated 2026-10-15T22:02:14.043Z. "-" = undocumented, not absent.*