--- title: "atmos vs kapitan" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/cloudposse-atmos-vs-kapicorp-kapitan" tools: ["cloudposse-atmos", "kapicorp-kapitan"] --- # atmos vs kapitan *GraphCanon updated Sep 20, 2026* ## Verdict Pick atmos if atmos is a Terraform orchestration tool for DevOps written in Go. It supports hierarchical imports and inheritance to keep environment configuration DRY; pick kapitan if kapitan offers inventory-driven model, secrets management, support for multiple infrastructure systems, including Kubernetes and Terraform. [atmos](https://atmos.tools) reports 1.4k GitHub stars, 177 forks, and 286 open issues, last pushed Sep 19, 2026. [kapitan](https://kapitan.dev) has 1.9k stars, 214 forks, and 155 open issues, last pushed Sep 9, 2026. Figures are from public GitHub metadata via [atmos's repository](https://github.com/cloudposse/atmos) and [kapitan's repository](https://github.com/kapicorp/kapitan). | | [atmos](/tools/cloudposse-atmos.md) | [kapitan](/tools/kapicorp-kapitan.md) | | --- | --- | --- | | Tagline | Terraform Orchestration Tool for DevOps using Go | Generic templated configuration management for Kubernetes, Terraform | | Stars | 1,379 | 1,924 | | Forks | 177 | 214 | | Open issues | 286 | 155 | | Language | Go | Python | | Adopt for | Atmos is a Terraform orchestration tool for DevOps written in Go. It supports hierarchical imports and inheritance to keep environment configuration DRY. | kapitan offers inventory-driven model, secrets management, support for multiple infrastructure systems, including Kubernetes and Terraform. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | Apache-2.0 | | Categories | Developer Tools | Developer Tools | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [atmos](/tools/cloudposse-atmos.md) | [kapitan](/tools/kapicorp-kapitan.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Active (82%) | | Days since push | 0d | 9d | | Open issues (now) | 286 | 155 | | Stars delta | +27 (30d) | +1 (30d) | | Open issues delta | -18 (30d) | +2 (30d) | | Full report | [trust report](/tools/cloudposse-atmos/trust.md) | [trust report](/tools/kapicorp-kapitan/trust.md) | ## Decision facts: atmos - **Adopt for:** Atmos is a Terraform orchestration tool for DevOps written in Go. It supports hierarchical imports and inheritance to keep environment configuration DRY. ## Decision facts: kapitan - **Adopt for:** kapitan offers inventory-driven model, secrets management, support for multiple infrastructure systems, including Kubernetes and Terraform. ## Choose when ### Choose atmos if… - atmos is primarily Go; kapitan is Python. - Tags unique to atmos: automation, cli, cloud, hcl2. - When you need a tool that supports both Terraform and Helmfile natively, allowing for streamlined management of infrastructure as code with rich inheritance capabilities. ### Choose kapitan if… - kapitan is primarily Python; atmos is Go. - Tags unique to kapitan: aws-kms, declarative, docker, gcp-kms. - Integrating with existing workflows based on Helm, Kustomize, or CUE ## When NOT to use atmos - Avoid using Atmos if you are looking for a solution that supports a wider range of infrastructure definition languages beyond Terraform and Helmfile. - Not suitable for those who require extensive UI features, as it primarily focuses on CLI operations and automated DRY configurations. ## When NOT to use kapitan - Lack of requirement for managing secrets using multiple protocols - Workflow does not benefit from integrating Helm, Kustomize, or CUE ## Common questions ### What is the difference between atmos and kapitan? atmos: Terraform Orchestration Tool for DevOps using Go. kapitan: Generic templated configuration management for Kubernetes, Terraform. See the comparison table for live GitHub stats and shared categories. ### When should I choose atmos over kapitan? Choose atmos over kapitan when atmos is primarily Go; kapitan is Python; Tags unique to atmos: automation, cli, cloud, hcl2; When you need a tool that supports both Terraform and Helmfile natively, allowing for streamlined management of infrastructure as code with rich inheritance capabilities. ### When should I choose kapitan over atmos? Choose kapitan over atmos when kapitan is primarily Python; atmos is Go; Tags unique to kapitan: aws-kms, declarative, docker, gcp-kms; Integrating with existing workflows based on Helm, Kustomize, or CUE. ### When should I avoid atmos? Avoid using Atmos if you are looking for a solution that supports a wider range of infrastructure definition languages beyond Terraform and Helmfile. Not suitable for those who require extensive UI features, as it primarily focuses on CLI operations and automated DRY configurations. ### When should I avoid kapitan? Lack of requirement for managing secrets using multiple protocols Workflow does not benefit from integrating Helm, Kustomize, or CUE ### Is atmos or kapitan more popular on GitHub? kapitan has more GitHub stars (1,924 vs 1,379). Stars measure visibility, not whether either tool fits your constraints. ### Are atmos and kapitan open source? Yes - both are open-source projects on GitHub (atmos: Apache-2.0, kapitan: Apache-2.0). ### Where can I find alternatives to atmos or kapitan? GraphCanon lists graph-backed alternatives at [atmos alternatives](/tools/cloudposse-atmos/alternatives) and [kapitan alternatives](/tools/kapicorp-kapitan/alternatives) ([atmos markdown twin](/tools/cloudposse-atmos/alternatives.md), [kapitan markdown twin](/tools/kapicorp-kapitan/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/cloudposse-atmos-vs-kapicorp-kapitan.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, atmos or kapitan? atmos: Very active. kapitan: Active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for atmos and kapitan? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [atmos trust report](/tools/cloudposse-atmos/trust); [kapitan trust report](/tools/kapicorp-kapitan/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=cloudposse-atmos`](/api/graphcanon/graph?tool=cloudposse-atmos) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_