Gantry vs Substrate
Gantry
gantryidp.devSubstrate
substratecore.comSide by side
| Figure | Gantry | Substrate |
|---|---|---|
| Price from | Free | $299/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | — | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 4 |
| Spec score · Internal Developer Platforms | 8.1 (#7) | 7.6 (#13) |
| Deployment | Gantry can be installed from a binary, run with Docker or Docker Compose, or built from source. | The platform provides multi-cluster workload deployment and real-time dashboards for cluster health, resource use, and deployment status. |
| Integrations | Official integrations include Kubernetes, GitHub, and ArgoCD; the site lists PagerDuty, Datadog, Grafana, and Flux as planned. | The integrations page lists GitHub, GitLab, self-hosted Git, Docker Hub, Amazon ECR, Google GCR, Azure ACR, and private OCI registries. |
| Product | Gantry is an open-source internal developer platform that provides a service catalog, self-service actions, GitOps configuration, and plugins. | Substrate is a control plane for managing and optimizing Kubernetes clusters, virtual machines, and databases across cloud providers. |
Plans
Substrate
- FreeFree
- Starter$299 a month
- Growth$999 a month
- EnterprisePriced on request
In their own words
Gantry
Gantry is an open-source internal developer platform for teams that need a service catalog and self-service workflows without dedicated platform engineering staff. Its catalog brings together services, APIs, teams, infrastructure components, and environments, including ownership and dependency relationships. Teams can create executable runbooks and workflows with schema-driven forms for tasks such as deployments and environment provisioning. Catalog entities can be written in YAML and applied with `gantry apply`, supporting version control, review, diffs, and rollback. Search uses SQLite FTS5, so Elasticsearch is not required. Official integrations include Kubernetes, GitHub, and ArgoCD; PagerDuty, Datadog, Grafana, and Flux are planned. Gantry ships as a Go binary with embedded SQLite and no external runtime dependencies. It can be installed from a binary, run through Docker or Docker Compose, or built from source. The documentation describes JWT authentication and requires installers to set an admin password. Gantry is self-hosted, licensed under Apache 2.0, and free. Its documentation says it is in active development and that APIs and schemas may change before its first stable release.
Substrate
Substrate has no write-up on Specifiction yet; its figures are above.