# Greymatter vs Istio

| Attribute | Greymatter | Istio |
|---|---|---|
| **vioscaleAI score** | 52.2 (47% (low)) | 55.7 (53% (medium)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 149 |
| adoption.github_stars | - | 38,429 |
| content.faq | `[{"answer":"A zero trust networking platform that automatically encrypts traffic between services, enforces security policies, and manages workload identity across hybrid cloud deployments without requiring code changes. It is indexed under Service Mesh.","source":"https://greymatter.io/","question":"What is Greymatter?","confidence":0.6},{"answer":"Greymatter offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://greymatter.io/","question":"Is Greymatter free?","confidence":0.6},{"answer":"We have confirmed browser-based access to Greymatter. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://greymatter.io/","question":"What platforms does Greymatter support?","confidence":0.6},{"answer":"Yes. Greymatter can be deployed cloud / SaaS, hybrid, on-premise, air-gapped and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://greymatter.io/","question":"Can Greymatter be self-hosted?","confidence":0.6},{"answer":"We have confirmed 9 integrations for Greymatter, including Grafana, Kibana, Prometheus, Splunk, Elasticsearch, Keycloak, PingFederate and Okta, plus 1 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://greymatter.io/","question":"What does Greymatter integrate with?","confidence":0.6},{"answer":"We have independently confirmed GDPR for Greymatter. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Greymatter not holding them. Always confirm compliance directly before you rely on it.","source":"https://greymatter.io/blog/greymatter-io-and-nist-800-207-zero-trust-compliance/","question":"What security certifications does Greymatter have?","confidence":0.7},{"answer":"Greymatter is available worldwide. Its primary market is the United States. The vendor is headquartered in the United States.","source":"https://greymatter.io/","question":"Where is Greymatter available?","confidence":0.75}]` | `[{"answer":"Istio extends Kubernetes with programmable networking capabilities, enabling traffic management, mutual TLS encryption, authorization, and observability across services. It supports both traditional sidecar proxy deployment and newer ambient mesh mode without sidecar injection. It is indexed under Service Mesh.","source":"https://istio.io","question":"What is Istio?","confidence":0.6},{"answer":"Istio 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://istio.io","question":"Is Istio free to use?","confidence":0.6},{"answer":"Istio supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://istio.io","question":"What platforms does Istio support?","confidence":0.6},{"answer":"Yes. Istio can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://istio.io","question":"Can Istio be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed GDPR for Istio. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Istio not holding them. Always confirm compliance directly before you rely on it.","source":"https://istio.io/latest/docs/tasks/security/cert-management/","question":"What security certifications does Istio have?","confidence":0.7},{"answer":"Yes. Istio 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/istio/istio","question":"Is Istio open source?","confidence":0.95}]` |
| deployment.options | `{"cloud":true,"hybrid":true,"air_gapped":true,"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | A platform that secures application and service traffic through automated encryption, granular policy enforcement, and built-in observability across hybrid clouds, Kubernetes, VMs, and edge environments. | An open-source service mesh that provides unified traffic management, security, and observability for microservices. Supports both sidecar-based and sidecar-less deployment models for flexibility. |
| features.capabilities | `{"fips_mode":true,"vm_support":true,"multicluster":true,"automatic_mtls":true,"traffic_splitting":true,"commercial_support":true,"built_in_observability":true}` | `{"proxy":"envoy","data_plane":"sidecar","vm_support":true,"cncf_maturity":"graduated","automatic_mtls":true,"traffic_splitting":true,"commercial_support":true,"built_in_observability":true}` |
| integrations.count | 5 | 1 |
| integrations.list | `[{"name":"Grafana"},{"name":"Kibana"},{"name":"Prometheus"},{"name":"Splunk"},{"name":"Elasticsearch"},{"name":"Keycloak"},{"name":"PingFederate"},{"name":"Okta"},{"name":"Auth0"}]` | `[{"name":"cert-manager"}]` |
| language.primary | - | Go |
| license.spdx | - | Apache-2.0 |
| market.availability | `{"hqCountry":"US","primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"cli":true}` |
| pricing | `{"type":"free","freeTier":true,"sourceUrl":"https://greymatter.io/","retrievedAt":"2026-08-13T18:19:59.123Z"}` | `{"type":"open_source","sourceUrl":"https://istio.io","retrievedAt":"2026-10-05T11:09:31.377Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | free | open_source |
| pricing.price_level | free | free |
| pricing.transparent | no | yes |
| release.cadence_days | - | 2 |
| release.history | - | `[{"url":"https://github.com/istio/istio/releases/tag/1.31.1","date":"2026-09-21T14:45:03Z","type":"stable","version":"1.31.1"},{"url":"https://github.com/istio/istio/releases/tag/1.30.5","date":"2026-09-21T19:32:06Z","type":"stable","version":"1.30.5"},{"url":"https://github.com/istio/istio/releases/tag/1.29.8","date":"2026-09-21T19:31:49Z","type":"stable","version":"1.29.8"},{"url":"https://github.com/istio/istio/releases/tag/1.31.0","date":"2026-08-31T15:47:13Z","type":"stable","version":"1.31.0"},{"url":"https://github.com/istio/istio/releases/tag/1.31.0-rc.4","date":"2026-08-27T19:10:50Z","type":"prerelease","version":"1.31.0-rc.4"},{"url":"https://github.com/istio/istio/releases/tag/1.30.4","date":"2026-08-27T15:10:20Z","type":"stable","version":"1.30.4"},{"url":"https://github.com/istio/istio/releases/tag/1.29.7","date":"2026-08-27T15:11:19Z","type":"stable","version":"1.29.7"},{"url":"https://github.com/istio/istio/releases/tag/1.31.0-rc.2","date":"2026-08-25T16:57:21Z","type":"prerelease","version":"1.31.0-rc.2"},{"url":"https://github.com/istio/istio/releases/tag/1.31.0-rc.0","date":"2026-08-19T14:07:42Z","type":"prerelease","version":"1.31.0-rc.0"},{"url":"https://github.com/istio/istio/releases/tag/1.31.0-beta.2","date":"2026-08-19T13:05:52Z","type":"prerelease","version":"1.31.0-beta.2"},{"url":"https://github.com/istio/istio/releases/tag/1.31.0-beta.1","date":"2026-08-17T12:46:22Z","type":"prerelease","version":"1.31.0-beta.1"},{"url":"https://github.com/istio/istio/releases/tag/1.31.0-alpha.2","date":"2026-08-11T12:40:13Z","type":"prerelease","version":"1.31.0-alpha.2"},{"url":"https://github.com/istio/istio/releases/tag/1.31.0-alpha.0","date":"2026-07-22T10:19:54Z","type":"prerelease","version":"1.31.0-alpha.0"},{"url":"https://github.com/istio/istio/releases/tag/1.30.3","date":"2026-07-16T16:50:56Z","type":"stable","version":"1.30.3"},{"url":"https://github.com/istio/istio/releases/tag/1.29.6","date":"2026-07-16T16:51:06Z","type":"stable","version":"1.29.6"},{"url":"https://github.com/istio/istio/releases/tag/1.28.10","date":"2026-07-01T10:31:11Z","type":"stable","version":"1.28.10"},{"url":"https://github.com/istio/istio/releases/tag/1.30.2","date":"2026-06-24T18:25:13Z","type":"stable","version":"1.30.2"},{"url":"https://github.com/istio/istio/releases/tag/1.29.5","date":"2026-06-24T18:25:57Z","type":"stable","version":"1.29.5"},{"url":"https://github.com/istio/istio/releases/tag/1.28.9","date":"2026-06-24T18:26:50Z","type":"stable","version":"1.28.9"},{"url":"https://github.com/istio/istio/releases/tag/1.30.1","date":"2026-06-04T21:49:36Z","type":"stable","version":"1.30.1"}]` |
| reliability.status_page | yes | - |
| security.certifications | `[{"name":"FIPS 140-3","status":"active","auditor":"CMVP"}]` | - |
| security.disclosure_policy | - | yes |
| security.fedramp | yes | - |
| security.gdpr | yes | yes |
| security.scorecard | - | 6.4 |
| security.trust_center | - | https://istio.io/latest/news/security/ |
| security.vulnerabilities | - | `{"count":11,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=istio.io%2Fistio&per_page=100","last_12m":2,"max_severity":"HIGH"}` |

## Capabilities (Service Mesh)

| Capability | Greymatter | Istio |
|---|:--:|:--:|
| **Architecture** |  |  |
| Data plane | - | Sidecar |
| Proxy | - | Envoy |
| **Security** |  |  |
| Automatic mutual TLS | ✓ | ✓ |
| SPIFFE / SPIRE identity | - | - |
| **Traffic** |  |  |
| Traffic splitting / canary | ✓ | ✓ |
| Fault injection / resilience | - | - |
| **Scale** |  |  |
| Multi-cluster federation | ✓ | - |
| **Portability** |  |  |
| VM support (beyond Kubernetes) | ✓ | ✓ |
| **Observability** |  |  |
| Built-in observability | ✓ | ✓ |
| **Standards** |  |  |
| Gateway API / GAMMA support | - | - |
| **Extensibility** |  |  |
| WASM extensibility | - | - |
| **Compliance** |  |  |
| FIPS mode | ✓ | - |
| **Ecosystem** |  |  |
| CNCF maturity | - | Graduated |
| **Ops** |  |  |
| Commercial support / enterprise edition | ✓ | ✓ |

*Source: vioscaleAI. Generated 2026-10-17T05:44:57.094Z. "-" = undocumented, not absent.*