Kratix

Kratix is an open-source framework for building internal developer platforms and coordinating platform capabilities. Its reusable Promises define self-service APIs and workflows, and can encode organisation- and department-level policy and governance. Kratix manages platform resources across clusters as a unified fleet. The maker describes access through portals, APIs, command-line tools, GitOps workflows, MCPs, automation, and AI agents. The free Kratix Open Source plan includes a Promise-writing CLI, Go and Python SDKs, Promise revisions and upgrades, a metrics and observability endpoint, Marketplace access, and Community Slack support. The Marketplace offers community-built Promises and Pipeline Stages, with Redis, Jenkins, and Amazon S3 among the named examples. Installation guidance covers Azure Kubernetes Service, Amazon EKS, Google Kubernetes Engine, Red Hat OpenShift, and other Kubernetes setups. Enterprise offerings are billed as Contact Us and list integrations, support, training, and security measures. The quick-start SeaweedFS-backed state store is intended for learning, not production.

Kratix provides an open-source foundation for reusable platform APIs and workflows, plus paid offerings with additional integrations and support. Treat the quick-start state store as a learning setup and review production requirements separately.

Kratix's open-source tier is suited to practitioners exploring internal platform capabilities. Teams planning production use can review the enterprise offerings and their listed integrations, support, and security provisions.

Overview

Kratix is an open-source framework for platform teams building internal developer platforms and orchestrating capabilities across Kubernetes. It is best suited to teams that want to create reusable self-service APIs and workflows rather than adopt a finished software catalog. The open-source core costs nothing; production-oriented integrations, security features and support require custom-priced plans.

Key features

Kratix uses Promises to define self-service APIs, embed workflows and manage platform resources across clusters. Teams can encode organisation- or department-level policy and governance in reusable Promises and Workflows, giving developers consistent ways to request capabilities while preserving platform-team control. That flexibility is valuable when a team wants to shape its own platform, but it also means Kratix is a framework to build on, not a ready-made catalog.

Fleet management treats resources in multiple clusters as a unified automated fleet. This is a useful fit for organisations already standardising on Kubernetes; it is less compelling if Kubernetes is not central to the infrastructure strategy. Installation guidance covers Azure Kubernetes Service, Amazon EKS, Google Kubernetes Engine, Red Hat OpenShift and other Kubernetes setups.

Capabilities can be consumed through portals, APIs, CLIs, GitOps workflows, MCPs, automation and AI agents. The Marketplace offers community-built Promises and Pipeline Stages, with examples for Redis, Jenkins and Amazon S3. These can provide starting points for common services, though teams still need to align them with their own platform and governance.

The free core includes a Promise-writing CLI, Go and Python SDKs, Promise revisions and upgrades, and a metrics and observability endpoint. Enterprise offerings add integrations for tools including Backstage, Cortex, Port, MCP and Terraform Enterprise or HCP Terraform. Secure base images, software bills of materials and nightly security scans are also included in the paid offerings, which matters to teams with production security requirements.

One operational caveat is the quick-start SeaweedFS-backed state store: it is intended for learning and is not robust or durable enough for production. Treat it as a way to get acquainted with the framework, not as a production storage choice.

Pricing

SKA fits teams needing MCP or enterprise Terraform integration and production-oriented onboarding; SKE adds a GUI, portal integrations and upgrade orchestration. Integrator is aimed at partners seeking specialised support and a dedicated relationship. Paid-plan pricing is custom, so teams should weigh the added services and integrations against their requirements before choosing a tier. A free trial is available.

Platforms

Kratix is offered through APIs and self-hosted deployment, with Kubernetes support. Its self-hosted model suits teams that want to run platform infrastructure in their own environments, but it places deployment and production-readiness decisions with those teams.

Who it's for

Kratix is a strong candidate for platform engineering teams that want to encode internal policy into reusable self-service capabilities and manage them across Kubernetes clusters. The open-source tier gives practitioners a no-cost way to work with the framework. Teams planning production use and needing supported integrations, security measures or business-hours assistance should evaluate SKA or SKE. Organisations seeking an off-the-shelf catalog rather than a framework should look elsewhere.

Pros and cons

• Pro: Reusable Promises combine self-service APIs, workflows and governance, helping platform teams standardise how capabilities are delivered.
• Pro: Fleet management and broad Kubernetes deployment guidance suit teams operating across clusters and environments.
• Pro: The free core includes SDKs, revisions and upgrades, observability and Marketplace access, giving practitioners substantial framework components without a license charge.
• Con: Kratix is a platform-building framework rather than a ready-made software catalog, so teams must shape and operate their own platform.
• Con: The quick-start state store is not suitable for production durability, so it cannot simply be carried over unchanged from learning to live use.
• Con: Enterprise integrations, security features and support are behind custom-priced plans, making costs less predictable than the free core.

Alternatives

Choose Backstage if a free open-source framework with API, Linux, macOS, self-hosted and web platforms better matches your needs. Consider configure8 if you want a freemium option with a free plan that includes unlimited catalog users, catalog items up to its data cap, and integrations.

Northflank is another freemium choice, with a free Sandbox plan that includes two services, one database and two cron jobs. Port may suit teams wanting a freemium option whose free plan sets caps of 15 seats, 10,000 entities and 400 runs.

Ravion offers a free Individuals plan for one user, with up to 50 modules and 2,000 pipeline minutes. Skyhook has a free plan capped at three Git-connected users, three services and one cluster.

Wayfinder is a freemium alternative with a free-forever plan. Cycloid offers a free SaaS plan for up to five users and one workspace, including blueprints, forms, orchestration, RBAC, SSO and MFA.

For broader browsing, see Internal Developer Portals and Platform Engineering Software.

Verdict

Choose Kratix if your platform team wants an open-source foundation for reusable, governed self-service capabilities across Kubernetes, and is prepared to build rather than install a finished catalog. Its free core is the clearest reason to start; the main reason to look elsewhere is the engineering commitment, while production support and integrations move into custom-priced plans.