# Emissary vs WSO2 API Manager

| Attribute | Emissary | WSO2 API Manager |
|---|---|---|
| **Vioscale score** | 50.2 (54% (medium)) | 94.2 (33% (low)) |
| activity.commits_last_30d | 31 | - |
| adoption.dependent_repos | 4 | - |
| adoption.github_stars | 4,519 | - |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true,"hybrid":true,"self_hosted":true}` |
| description.long | 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. | A gateway platform that centralizes management of APIs and AI model traffic across cloud and self-hosted environments, with built-in cost controls, security policies, and monetization capabilities. |
| features.capabilities | `{"mtls":true,"hosting":"self","k8s_native":true,"grpc_support":true,"observability":true,"rate_limiting":true}` | `{"hosting":"both","k8s_native":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,"web":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://emissary-ingress.dev/","retrievedAt":"2026-08-14T08:33:38.485Z"}` | `{"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 | 5.9 | - |
| 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: Vioscale. Generated 2026-09-01T17:21:30.735Z. "-" = undocumented, not absent.*