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Best API Catalog Tools in 2026

Backstage leads this list of 14 (8.5/10, free plan). Postman is next (8.4/10, free plan), and Port is the next highest-placed option with a free plan (7.9/10). API catalog tools help teams organize API information and make it available through catalogs or portals. Use this list to compare tools by published plans, platforms and catalog capabilities.

  1. 01 Backstage

    Backstage suits organizations whose product and engineering teams need a shared developer portal and software catalog.

    Free plan Web · macOS · Linux · API
    8.5 Visit Specs
  2. 02 Postman

    Postman suits people designing, testing, documenting, or monitoring APIs, including teams that need collaboration, integrations, or API testing across multiple protocols.

    From $9/mo Free plan Web · Windows · macOS · Linux
    8.4 Visit Specs
  3. 03 Kong Konnect
    From $25/mo Free trial Web · Windows · macOS · Linux
    8.3 Visit Specs
  4. 04 API Portal

    API Portal is aimed at API teams, from small teams to large organizations, that need shared API discovery and documentation.

    Free trial Web · Windows · macOS · Linux
    8.1 Visit Specs
  5. 05 Port

    It suits engineering teams that want a software catalog, governed workflows, and lifecycle scorecards.

    From $30/mo Free plan Web · API · Browser extension
    7.9 Visit Specs
  6. 06 MuleSoft Anypoint Exchange
    From $2,000/mo Free trial Web · API
    7.8 Visit Specs
  7. 07 Gravitee Developer Portal
    From $2,500/mo Web · API · Self-hosted
    7.7 Visit Specs
  8. 08 Axway Amplify Engage
    Web · API · Self-hosted
    7.6 Visit Specs
  9. 09 Cortex
    Web · API
    7.4 Visit Specs
  10. 10 OpsLevel
    Web · API · Self-hosted
    7.1 Visit Specs
  11. 11 Salt Security API Inventory
    Web
    5.5 Visit Specs
  12. 12 WSO2 API Portal & MCP Hub
    Web
    5.5 Visit Specs
  13. 13 StackSpot API Catalog
    Web
    5.2 Visit Specs
  14. 14 Swagger Catalog
    Web
    5.2 Visit Specs
How this list is ordered. Specifiction scores each tool on how fully its maker documents it, whether its prices are published, where the research puts it, the platforms it runs on and whether it can be tried for free (how we rank). Makers can also buy a numbered place (how Specifiction is paid for).

Review free-plan and trial availability, entry paid rates, catalog inputs, ownership assignment, governance workflows, portal reach, specification formats and deployment choices before selecting.

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