Flux

GitOps toolkit for Kubernetes — continuous delivery the cloud-native way.

Flux is a CNCF graduated GitOps tool for keeping Kubernetes clusters in sync with configuration sources like Git repositories, Helm charts, and OCI artifacts. Lightweight, composable, and designed to work with existing tools. The primary alternative to ArgoCD in the GitOps space.

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About Flux

Flux is a set of continuous delivery tools designed to keep Kubernetes clusters synchronized with sources of configuration. As a CNCF graduated project, it implements the GitOps pattern using a set of composable Kubernetes controllers that react to changes in Git repositories, Helm repositories, and OCI registries.

Unlike ArgoCD's monolithic approach, Flux is built as a collection of specialized controllers (source, kustomize, helm, notification, image-automation) that can be used independently or together. This makes it lightweight and flexible, fitting naturally into existing CI/CD workflows.

Flux is completely free and open source under the Apache 2.0 license. Commercial support and enterprise features are available from Weaveworks (now maintained by the CNCF community).

Pricing & Platform Specs

Pricing Summary

100% free and open source under the Apache-2.0 license. CNCF-graduated GitOps operator for Kubernetes with no licensing fees or node limits. Commercial enterprise support and distributions available via third-party vendors (ControlPlane, Microsoft Azure Arc).

full pricing breakdown →

Supported Platforms

Runs on any Kubernetes cluster. CLI for macOS, Windows, Linux.

Explore categories, tags & use cases

Use Cases

DevOps Automation Full-Stack Development

Alternatives

All Flux alternatives →

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Woodpecker CI

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Woodpecker CI is a community-maintained open-source CI/CD engine forked from Drone CI, designed as the default continuous integration solution for self-hosted Git platforms like Gitea, Forgejo, and Codeberg. With simple YAML pipeline configuration, minimal resource usage (~100MB RAM), and Apache-2.0 licensing, it provides a lightweight alternative to Jenkins and GitHub Actions for developers who prefer infrastructure they control.

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KubeVela

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Open Source

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Side-by-Side Comparisons

ArgoCD

Flux

Argo CD vs Flux: UI GitOps Control Plane or Composable GitOps Toolkit?

Argo CD fits teams that want a visible GitOps control plane with a web UI, Application resources, AppProject boundaries, and centralized rollout review. Flux fits teams that prefer composable Kubernetes controllers, namespace-scoped operations, and HelmRelease-native GitOps without making a dashboard the operational center.

ArgoCDFlux

Community experience

Sources & verification

Flux Official Documentation & Repository

Sources checked: September 5, 2026
Content verified: September 6, 2026

Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.

FAQ

What is Flux?

Is Flux free?

Yes — Flux is open source and free to use. 100% free and open source under the Apache-2.0 license. CNCF-graduated GitOps operator for Kubernetes with no licensing fees or node limits. Commercial enterprise support and distributions available via third-party vendors (ControlPlane, Microsoft Azure Arc).

Is Flux open source?

Yes — Flux is open source.

Is Flux still maintained?

Yes — Flux is active. Its listing was last verified on September 6, 2026.

What are the best Flux alternatives?

The first editor-selected Flux alternatives are Keploy, Woodpecker CI, Argos CI, and more.

Flux

About Flux

Pricing & Platform Specs

Pricing Summary

Supported Platforms

Categories

Tags

Use Cases

Alternatives

Keploy

Woodpecker CI

Argos CI