Backstage vs Sealos
Backstage
backstage.ioSealos
sealos.ioSide by side
| Figure | Backstage | Sealos |
|---|---|---|
| Price from | Free | $7/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 8 |
| Spec score · Platform Engineering Software | 8.6 (#5) | 7.8 (#18) |
| Deployment | The standalone installation guide creates a locally running app with an in-memory SQLite database and demo content, and says this setup is not production-ready. | The platform can create projects from GitHub repositories, templates, Docker images, or database services. |
| Intended users | Backstage is aimed at organizations whose product and engineering teams need a shared developer portal and software ecosystem catalog. | The pricing page describes Hobby as intended for side projects and always-on personal apps, and Standard as intended for production workloads needing more memory, traffic, and priority support. |
| Product | Backstage is an open-source framework for building developer portals. | Sealos describes itself as an AI-native cloud development platform that unifies cloud development environments, deployments, managed databases, and Kubernetes. |
| Security | The official threat model outlines security considerations for operators, developers, and security researchers, and points to the project’s security policy for vulnerability reporting. | The platform overview describes workspace-based resource isolation, granular RBAC controls, and per-workspace resource quotas. |
| Support | The project lists Discord, FAQs, and community resources for support and discussion. | The Standard plan includes priority support and a 99.99% SLA. |
Plans
Sealos
- Free trialFree
- Starter$7 a month
- Hobby$25 a month
- Standard$128 a month
- Pro$512 a month
- Team$2,030 a month
- Enterprise$12,451 a month
- CustomPriced on request
In their own words
Backstage
Backstage is a free, open-source framework for building and deploying developer portals. Its software catalog records ownership and metadata for services, websites, libraries and data pipelines, for teams managing a small set of services or company catalogs of thousands. Software Templates can fill code skeletons with variables and publish generated projects to destinations such as GitHub or GitLab. TechDocs keeps documentation in a docs-like-code workflow close to code. Integrations can read or publish data through GitHub, GitLab, Bitbucket, LDAP and cloud providers. Teams can extend a portal with existing open-source plugins or build their own; Backstage Search can index sources such as TechDocs, Confluence and Stack Overflow. Its Kubernetes feature aggregates a service’s deployments through the Kubernetes API. Backstage is self-hosted. The standalone installation guide creates a local demo with an in-memory SQLite database and says this setup is not production-ready. It lists minimum requirements of 20 GB disk and 6 GB memory, with more disk needed as modules and plugins are added. Its threat model describes only rudimentary denial-of-service protection and recommends a protected deployment environment.