Gravitee

What Is Gravitee?

The API management market has long been dominated by a familiar set of names — MuleSoft (Salesforce), Apigee (Google), and Kong. All are headquartered in the United States. All route your API traffic through infrastructure you do not control. For European organisations navigating GDPR, data sovereignty requirements, and increasing regulatory scrutiny, that dependency has become a genuine strategic risk.

Gravitee offers a different path. Founded in Lille, France in 2015, the company has built an open-source API management platform that covers the full API lifecycle: design, gateway, developer portal, analytics, and access management. What sets it apart from the American incumbents is not just its European origin — it is the only Gartner Magic Quadrant Leader (recognised in both 2024 and 2025) that offers a fully open-source core under the Apache 2.0 licence.

The company has raised over $125 million, including a $60 million Series C in May 2025 led by Sixth Street Growth. That funding has accelerated Gravitee's push into two areas that define the next generation of API management: event-native architecture (Kafka, MQTT, async APIs) and federated API governance across multi-cloud environments. With roughly 178 employees across offices in Lille, London, and Denver, Gravitee is no longer a niche open-source project — it is a serious enterprise contender.

Key Features

Event-Native API Gateway

Gravitee's most technically distinctive capability is its event-native gateway. While most API management platforms bolt async support onto a fundamentally synchronous architecture, Gravitee built its gateway on a reactive foundation from the ground up. This means native, first-class support for Apache Kafka, MQTT, WebSocket, Server-Sent Events, AMQP, and webhooks — alongside traditional REST, SOAP, and GraphQL.

In practice, this lets you do things like subscribe to a Kafka topic and expose that data stream as a WebSocket API through the gateway, applying the same rate limiting, authentication, and transformation policies you would use for a REST endpoint. For organisations running event-driven architectures, this eliminates the need for separate tooling to manage synchronous and asynchronous APIs.

Federated API Management

Enterprise environments rarely run a single API gateway. Teams inherit AWS API Gateway from one division, Apigee from another, Kong from a third. Gravitee's federation capability auto-discovers APIs across these disparate gateways and centralises them in a single developer portal and governance layer. You get unified visibility, consistent policies, and a single catalogue — without forcing teams to migrate off their existing gateways.

This is a genuine differentiator. Most competing platforms require you to consolidate onto their gateway to get full management capabilities. Gravitee lets you govern what you already have.

Developer Portal

The developer portal is fully customisable and supports self-service API subscription, interactive documentation, and usage analytics. It consolidates APIs from Gravitee's own gateway and federated third-party gateways into one searchable catalogue. For organisations exposing APIs to external partners or internal teams, the portal reduces onboarding friction and provides the kind of professional developer experience that encourages adoption.

API Designer and Policy Studio

Gravitee includes a visual API designer with a no-code graphical interface for building OpenAPI-compliant specifications. The Policy Studio lets you visually configure traffic policies — rate limiting, authentication, request transformation, IP filtering — without writing code. For platform teams managing dozens or hundreds of APIs, this visual approach significantly reduces configuration errors and speeds up iteration.

Kubernetes-Native Operations

The Gravitee Kubernetes Operator (GKO) enables fully declarative API management through Kubernetes custom resources. Combined with GitOps tools like ArgoCD, this means your API configurations live in version control, deploy through CI/CD pipelines, and benefit from the same infrastructure-as-code practices you use for the rest of your stack. For cloud-native teams, this is table stakes — and Gravitee delivers it natively rather than as an afterthought.

Pricing

Gravitee's pricing model is refreshingly straightforward compared to the per-call or per-service models common in the API management space. The structure centres on a flat per-gateway fee with no limits on APIs, users, or API calls.

The open-source Community Edition is genuinely free — full API management including gateway, portal, and analytics under Apache 2.0. You self-host, you maintain, you get community support only. For development environments and smaller deployments, this is a credible production option.

The Starter tier begins at $2,500 per month per gateway. That includes unlimited APIs, unlimited API calls, unlimited users, and production-level support. Compared to Kong's per-service pricing or Apigee's consumption-based model, this flat-rate approach eliminates billing surprises and makes cost planning predictable — a significant advantage for organisations scaling their API programmes.

Enterprise pricing is custom and adds federated API management, advanced policies, premium support with dedicated CSMs, and hybrid/multi-cloud deployment options. Gravitee does not publicly disclose enterprise pricing, which is standard for this market segment.

The gap between free and $2,500/month is worth noting. There is no intermediate tier for small teams that need commercial support but cannot justify $30,000+ per year. This is the most common criticism in user reviews, and it is a valid one.

EU Compliance & Privacy

Gravitee's compliance story has two layers. As a French company (Gravitee.io SAS, headquartered in Lille), it is subject to EU jurisdiction and GDPR by default. But the real compliance strength comes from the deployment model.

Self-hosted Gravitee runs entirely within your infrastructure. API traffic, analytics data, developer portal content, and access management — all of it stays on servers you control, in data centres you choose. For organisations with strict data residency requirements, this is the gold standard: no data leaves your perimeter, full audit trails, complete sovereignty.

The managed cloud option supports EU-hosted deployment for teams that want Gravitee's convenience without self-hosting overhead. Hybrid deployment — where the control plane is managed by Gravitee but the data plane (gateway) runs in your infrastructure — offers a middle ground that keeps API traffic local while offloading management complexity.

One nuance worth flagging: Gravitee's operational headquarters is in Denver, Colorado, with offices in Lille and London. While the company was founded in France and maintains its legal entity there, the US headquarters may be a consideration for organisations with strict vendor domicile requirements. The self-hosted deployment model mitigates this concern in practice — your data never touches Gravitee's infrastructure — but it is worth noting in due diligence.

All component communication uses TLS encryption, and the platform includes role-based access control and audit logging as standard features.

Who It's Best For

Enterprise platform teams managing APIs across multiple gateways and cloud providers. The federation capability is a genuine differentiator that no other Gartner Leader offers at this level.

Event-driven architecture teams running Kafka, MQTT, or other message brokers who need to expose event streams as managed APIs with proper security, rate limiting, and monitoring.

EU-regulated organisations in finance, healthcare, or government that need full data sovereignty. Self-hosted deployment with Apache 2.0 licensing means zero vendor data exposure.

Cloud-native engineering teams using Kubernetes and GitOps workflows who want API management that fits their existing deployment model rather than fighting against it.

The Verdict

Gravitee occupies a unique position in the API management landscape: it is the only Gartner Magic Quadrant Leader that is both open-source and European-founded. The event-native gateway, federated multi-gateway governance, and Kubernetes-native operations put it ahead of most competitors on technical capability. The pricing gap between free and $2,500/month is a real barrier for smaller teams, and the community is still smaller than Kong's — but for enterprises that need protocol diversity, data sovereignty, and modern deployment patterns, Gravitee is a platform worth serious evaluation.

Frequently Asked Questions

Is Gravitee genuinely open source?

Yes. The core API Management platform — gateway, developer portal, analytics — is available under the Apache 2.0 licence on GitHub. You can self-host it without any licence fees. Enterprise features like federation, advanced policies, and premium support require a commercial licence.

How does Gravitee compare to Kong?

Both are Gartner Leaders and open-source at their core. Gravitee's key advantages are its event-native async support (Kafka, MQTT natively), federated multi-gateway management, and flat per-gateway pricing. Kong has a larger community, more third-party plugins, and a lower entry price for its commercial tiers.

Can Gravitee handle both REST APIs and Kafka event streams?

Yes. This is Gravitee's core technical differentiator. The event-native gateway natively supports Kafka, MQTT, WebSocket, SSE, and AMQP alongside REST, SOAP, and GraphQL. You can apply the same policies — authentication, rate limiting, transformation — across synchronous and asynchronous APIs.

Is Gravitee suitable for organisations with strict EU data residency requirements?

Yes. Self-hosted Gravitee runs entirely within your infrastructure with no data sent to Gravitee's servers. The managed cloud option supports EU-hosted deployment. Hybrid mode keeps API traffic in your data centre while the control plane is managed externally.

What does the $2,500/month Starter plan include?

The Starter plan covers one gateway instance with unlimited APIs, unlimited API calls, unlimited users, and production support. There are no per-call charges or hidden fees. Additional gateways are priced incrementally.