API Portal vs Backstage

API Portal is a central platform for building, testing, managing and documenting APIs. Its catalog provides a shared place to manage APIs and lets developers find them through self-service discovery. API Explorer supports interactive walkthroughs and browser-based tryouts, while a CLI and REST API can automate specification updates in deployment pipelines. Supported specifications include OpenAPI, Swagger, RAML, AsyncAPI, JSON Schema and GraphQL. Version management can detect breaking changes, generate changelogs from specification differences and apply deprecation policies with sunset timers. Ready-made CI/CD integrations are listed for GitHub Actions, GitLab CI and Jenkins. Teams can set granular permissions for viewing, testing and consuming APIs; enterprise setups can use SSO and SAML. The company says data is hosted in EU data centers in Frankfurt and that it is GDPR-compliant. Enterprise offers on-premise deployment. Starter includes up to five APIs and three team members; Professional offers unlimited APIs and 25 team members; Enterprise includes unlimited teams. Pricing is on request, and a 14-day trial is available; there is no free plan.

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.