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Best API Catalog Tools in 2026

API catalog tools bring together APIs, ownership details, governance workflows, portal access, and specification formats. This list is for people choosing a catalog on a budget.

  1. 1

    Backstage

    Free plan APILinuxMac+2

    Backstage brings a software catalog, documentation, templates, search, and integrations into a customizable developer portal.

    7.6 Free plan Visit site
  2. 2

    Port

    Free plan APIExtensionWeb

    Port brings cataloging, workflows, controls, and AI agents into an engineering platform, with a free tier for smaller teams.

    7.1 Free plan · paid from $30/user/mo (annual) Visit site
  3. 3

    Postman

    by Postman
    Free plan ExtensionLinuxMac+2

    Postman combines API creation, testing, documentation, and monitoring in one platform, with a free plan and paid options. Check plan availability and the annual billing terms before choosing a tier.

    7.1 Free plan · paid from $9/mo (annual) Visit site
  4. 4

    API Portal

    Free trial APILinuxMac+3

    API Portal combines API cataloging, documentation, automation, versioning, and access controls in one platform.

    6.6 Pricing on request · 14-day trial Visit site
  5. 5

    Axway Amplify Engage

    Paid APISelf-hostedWeb
    5.9 Pricing on request Visit site
  6. 6

    Cortex

    Paid APIWeb

    Cortex combines engineering context, scorecards, intelligence, and workflow tools for teams coordinating engineering operations.

    5.6 Pricing on request Visit site
  7. 7

    OpsLevel

    Paid APISelf-hostedWeb

    OpsLevel combines a software catalog, maturity checks and self-service workflows for engineering organizations.

    5.5 Pricing on request Visit site
  8. 8

    Kong Konnect

    Free trial APILinuxMac+3

    Kong Konnect brings gateway management together with API lifecycle, catalog and analytics capabilities.

    5.2 From $25/mo · 30-day trial Visit site
  9. 9

    Gravitee Developer Portal

    Paid APISelf-hostedWeb
    4.8 From $2,500/mo Visit site
  10. 10

    MuleSoft Anypoint Exchange

    Free trial APIWeb
    4.5 From $2,000/mo (annual) · 30-day trial Visit site
  11. 11

    Salt Security API Inventory

    Paid Web
    4.1 Pricing on request Visit site
  12. 12

    WSO2 API Portal & MCP Hub

    Paid Web
    4.1 30-day trial Visit site
  13. 13

    StackSpot API Catalog

    Paid Web
    3.9 Pricing on request Visit site
  14. 14

    Swagger Catalog

    Paid Web
    3.9 Pricing on request Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare free plans, trial periods, paid starting prices, deployment choices, and supported platforms. If you need to read or change code, check the open-source licence before choosing.

Questions

Are free plans available for API catalog tools?

Yes. Backstage and Port offer free plans. Other tools may use paid pricing or pricing on request.

Which tools list free trials?

API Portal includes a 14-day trial. Kong Konnect and MuleSoft Anypoint Exchange each list 30-day trials.

Which paid starting prices are listed?

Listed prices begin at $25 per month for Kong Konnect and $30 per user monthly on annual billing for Port. Gravitee lists $2,500 monthly, while MuleSoft lists $2,000 monthly on annual billing.

Which platforms can these tools run on?

The category covers web, API, macOS, Linux, self-hosted, and Windows platforms.

What should I compare before choosing?

Review free-plan availability, paid starting price, catalog sources, ownership assignment, governance workflows, portal access, API specification formats, and deployment options.

Can I read or change the code?

Check the tool's open-source licence. Licence terms determine whether you can read, modify, and redistribute code.

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