Gantry

Gantry is a self-hosted internal developer platform for teams that want a service catalog and repeatable operational workflows without dedicated platform staff. Its compact deployment and GitOps configuration make it a practical starting point; its active development makes release stability a real consideration.

Overview

Gantry brings services, APIs, teams, infrastructure components, and environments into one catalog, with ownership and dependency relationships. That shared map can clarify who is responsible for a component and what it relies on, giving teams a useful foundation for internal platform work.

The architecture is deliberately contained: one Go binary, embedded SQLite, and no external runtime dependencies. Teams can install the binary, run Gantry with Docker or Docker Compose, or build it from source. This suits organizations that want to operate an internal platform without maintaining a larger service stack.

Key features

Teams can define executable runbooks and workflows with schema-driven forms for jobs such as deployments and environment provisioning. Developers get a consistent route to recurring tasks, while the team defining the workflow controls what actions are exposed.

Catalog entities can be written in YAML and applied with gantry apply. Version control, review, diffing, and rollback give teams a familiar way to manage catalog changes as code. Search uses SQLite FTS5, so full-text lookup does not require a separate Elasticsearch service.

Official integrations cover Kubernetes, GitHub, and ArgoCD, which gives teams using those tools a concrete integration base. PagerDuty, Datadog, Grafana, and Flux are planned; teams depending on those connections should not treat them as current capabilities.

The documentation describes JWT authentication and tells installers to set an admin password. The installer also verifies downloads with SHA-256 checksums. These are useful security provisions, though the product’s evolving status still matters for teams that need stable interfaces.

Pricing

Gantry is free and open source under the Apache 2.0 license. Its Gantry plan costs nothing and is self-hosted, with the software catalog, self-service workflows, Kubernetes support, and ownership documentation.

There is no paid tier to compare against: teams take on deployment and operation themselves. The main cost to weigh is the engineering time needed to run the platform and adapt to changes while the project approaches its first stable release.

Platforms

Gantry supports Linux, macOS, Windows, web, and self-hosted deployment. Binary, Docker, Docker Compose, and source-build options give teams flexibility in how they install it; self-hosting means the team remains responsible for operating its instance.

Who it's for

Gantry best fits engineering teams that want a catalog of ownership and dependencies plus self-service workflows, but lack dedicated platform engineering staff. Its small runtime footprint and YAML-based GitOps approach are especially appealing where teams already manage infrastructure and configuration through code.

Teams that require APIs and schemas to remain stable across releases should look elsewhere or wait for a stable release. The project is in active development, and its documentation warns that those interfaces may change.

Pros and cons

• Lean to deploy: a single binary and embedded SQLite avoid external runtime dependencies, reducing the number of services a small team must operate.
• Catalog changes fit code review: YAML and gantry apply support version control, review, diffing, and rollback.
• Useful workflow building blocks: executable runbooks and schema-driven forms can expose repeatable tasks such as deployments and environment provisioning.
• Focused official integrations: Kubernetes, GitHub, and ArgoCD are supported; several other named integrations remain planned.
• Release contracts may shift: active development and possible API or schema changes make it a weaker fit for teams that need stable interfaces.

Alternatives

Backstage is another free, open-source framework for teams seeking an internal developer portal. OpenChoreo may suit teams specifically looking for a self-hosted, open-source Kubernetes platform.

Northflank is worth considering for teams that want a freemium option with always-on compute and free service, database, and cron-job allowances. Skyhook may fit smaller setups seeking a free tier capped at three users, three services, and one cluster, with self-onboarding.

Cycloid offers a free SaaS plan for up to five users and one workspace, with blueprints, forms, orchestration, RBAC, SSO, and MFA. Ravion has a free-for-one-user plan with module and pipeline-minute limits, making it a possible fit for individual use.

WSO2 Developer Platform is an alternative for readers considering a paid developer platform from WSO2. configure8 may fit teams wanting a freemium catalog with unlimited catalog users, items within a data cap, and integrations.

For more options, browse Internal Developer Portals.

Verdict

Choose Gantry if your engineering team needs a self-hosted catalog and self-service workflows, with GitOps configuration and official Kubernetes, GitHub, and ArgoCD integrations. Its lean architecture makes that combination accessible to teams without dedicated platform staff. Look elsewhere if stable APIs and schemas are a requirement while Gantry is still in active development.