4
Apistaq
Apistaq is an API governance control plane that turns OpenAPI specifications into version controls, rate-limit policies, SDKs, and a developer portal.
Free planWebAPI
7.2From $149 a month
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5
oasdiff
oasdiff compares OpenAPI specifications, creates changelogs, and flags breaking changes before release.
Free planWebAPILinuxmacOS
7.2From $100 a month
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6
DigitalAPI
DigitalAPI brings APIs from different gateways into a shared catalogue for developers, partners, and AI agents.
WebAPISelf-hosted
7.1From $2,500 a month
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7
Routebase
Routebase is a hosted service for managing API design, mocking, testing, documentation, monitoring, and MCP capabilities from a shared specification.
Free planWebAPILinuxmacOS
7.1From $9 a month
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8
SwaggerHub
SwaggerHub is a toolkit for API design, testing, documentation, and governance.
Free planWebSelf-hosted
7.1From $740 a year
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9
Redocly
WebAPIExtension
7.0From $10 a month
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10
Grapity
Grapity is an open-source API governance platform for teams managing API contracts and changes that could affect consumers.
Free planWebLinuxmacOSSelf-hosted
6.9From $29.95 a month
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11
Apiway
Apiway is an end-to-end platform for taking APIs from design through production and customer use.
Free planWebAPISelf-hosted
6.6From €12,000 a year
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12
CodeRifts
CodeRifts gives API teams a way to govern and authorize contract changes, including changes proposed by AI agents.
Free planWebAPI
6.6From $149 a month
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13
Zally
Zally is an API linter and quality assurance tool for OpenAPI specifications.
Free planWebAPILinuxmacOS
6.6Free plan
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14
API Architect
API Architect is a web product for describing software architecture, business rules, APIs, and AI governance in a shared executable DSL.
Free planWeb
6.5From €29 a month
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15
Stoplight Elements
Free planWebSelf-hosted
6.4Free plan
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16
TeejLab API Discovery and Lifecycle Manager
TeejLab API Discovery and Lifecycle Manager is a paid web and API platform for enterprise API discovery, security, and governance.
WebAPI
6.4
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17
SpecLayer
SpecLayer provides SpecDoc for managing OpenAPI specifications as code, applying governance in CI/CD, and publishing developer portals.
WebAPI
6.1From $29 a month
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18
vacuum
Vacuum is a free, open-source linter and quality checker for OpenAPI, AsyncAPI, and JSON Schema specifications.
APIExtensionLinuxmacOS
6.1
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19
Apigee API hub
Apigee API hub brings an organization’s API information into a catalog for API consumers, producers, and platform teams to discover, assess, organize, and manage.
Free planWebAPI
6.0Free plan
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20
API Validator
API Validator is a free, open-source browser application for checking API descriptions against a Spectral-powered governance ruleset.
WebSelf-hosted
5.6
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21
Azure API Center
Azure API Center is a web service for organizing and governing APIs through their lifecycle.
Free planWeb
5.6Free plan
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22
Google API Linter
Google API Linter checks API surfaces defined in Protocol Buffers against Google API standards set out in API Improvement Proposals.
Free planSelf-hosted
5.6Free plan
Visit
23
Wag-Tail API Collaboration Portal
Wag-Tail API Collaboration Portal is a paid, self-hosted and web-based system for enterprise API teams.
WebSelf-hosted
5.3
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24
Swagger Studio
Web
4.6
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