Best API Governance Software in 2026
Updated
In short: ATA API Governance is ranked #1 of 22 as of 4 October 2026, ahead of oasdiff and Postman. The best-ranked option with a free plan is oasdiff. The lowest first paid tier on this page is DigitalAPI at $2.50/mo.
When you need consistent standards across APIs, compare these tools by the formats they govern and the controls they offer. Compared on API linting, style guide enforcement, and design review workflows, the entries show different parts of a governance process; lifecycle controls and access control level add further distinctions. CI/CD integration may be relevant to how governance fits into development workflows. ATA API Governance, oasdiff, and Postman are among the named options to consider. Check free-plan availability and paid-from pricing alongside the listed capabilities to see which combination suits your team’s requirements.
22 API governance software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
11 of the 22 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | ATA API GovernanceWeb · Windows · Mac · Linux · Self-hosted · API · Extension | Three bars | — | 4 of 6 | $2.97/mo | 6.7 | |
| 2 | oasdiffWeb · Windows · Mac · Linux · Self-hosted · API | Three bars | — | 4 of 6 | $100/mo | 6.6 | |
| 3 | PostmanWeb · Windows · Mac · Linux · Extension | Three bars | — | 4 of 6 | $9/mo | 6.6 | |
| 4 | RoutebaseWeb · Windows · Mac · Linux · API | Three bars | — | 4 of 6 | $9/mo | 6.6 | |
| 5 | KarateWindows · Mac · Linux · Self-hosted · API · Extension | Three bars | — | 3 of 6 | $8.33/mo | 6.5 | |
| 6 | Apigee API hubWeb · API | Two bars | — | 1 of 6 | Free | 6.4 | |
| 7 | ApiwayWeb · Self-hosted · API | Two bars | — | 1 of 6 | €1,000/mo | 6.4 | |
| 8 | CodeRiftsWeb · API | Two bars | — | 1 of 6 | $149/mo | 6.4 | |
| 9 | SwaggerHubWeb · Self-hosted | Two bars | — | 1 of 6 | $61.67/mo | 6.4 | |
| 10 | Google API LinterSelf-hosted | Two bars | — | 0 of 6 | Free | 6.3 | |
| 11 | Stoplight ElementsWeb · Self-hosted | Two bars | — | 1 of 6 | Free | 6.3 | |
| 12 | RedoclyWeb · API · Extension | One bar | — | — | 1 of 6 | $10/mo | 5.5 |
| 13 | vacuumWindows · Mac · Linux · Self-hosted · API · Extension | Two bars | — | — | 3 of 6 | — | 5.5 |
| 14 | DigitalAPIWeb · Self-hosted · API | One bar | — | — | 1 of 6 | $2.50/mo | 5.4 |
| 15 | GrapityWeb · Windows · Mac · Linux | One bar | — | — | 4 of 6 | — | 5.4 |
| 16 | SpecLayerWeb · API | One bar | — | — | 1 of 6 | $29/mo | 5.4 |
| 17 | ZallyWeb · Windows · Mac · Linux | One bar | — | — | 4 of 6 | — | 5.4 |
| 18 | API ValidatorWeb · Self-hosted | No signal | — | — | 1 of 6 | — | 5.2 |
| 19 | API ArchitectWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 20 | ApistaqWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 21 | TeejLab API Discovery and Lifecycle ManagerWeb | No signal | — | — | 1 of 6 | — | 4.8 |
| 22 | Wag-Tail API Collaboration PortalWeb | No signal | — | — | 1 of 6 | — | 4.8 |
Compare all 22 in a table
| # | App | Score | Free plan | From | Free plan | Paid from | Style guide enforcement | API linting |
|---|---|---|---|---|---|---|---|---|
| 1 | ATA API Governance | 6.7 | Free plan | $2.97/mo | Yes | — | Yes | Yes |
| 2 | oasdiff | 6.6 | Free plan | $100/mo | Yes | 100 /mo | — | — |
| 3 | Postman | 6.6 | Free plan | $9/mo | Yes | 9 /mo | — | — |
| 4 | Routebase | 6.6 | Free plan | $9/mo | Yes | — | Yes | Yes |
| 5 | Karate | 6.5 | Free plan | $8.33/mo | Yes | — | — | — |
| 6 | Apigee API hub | 6.4 | Free plan | Free | Yes | — | Yes | Yes |
| 7 | Apiway | 6.4 | Free plan | €1,000/mo | Yes | — | Yes | Yes |
| 8 | CodeRifts | 6.4 | Free plan | $149/mo | Yes | — | Yes | Yes |
| 9 | SwaggerHub | 6.4 | Free plan | $61.67/mo | Yes | — | Yes | Yes |
| 10 | Google API Linter | 6.3 | Free plan | Free | — | — | Yes | Yes |
| 11 | Stoplight Elements | 6.3 | Free plan | Free | Yes | — | — | — |
| 12 | Redocly | 5.5 | No | $10/mo | No | — | — | — |
| 13 | vacuum | 5.5 | No | — | — | — | — | — |
| 14 | DigitalAPI | 5.4 | No | $2.50/mo | — | — | Yes | Yes |
| 15 | Grapity | 5.4 | No | — | Yes | 29.95 /mo | — | — |
| 16 | SpecLayer | 5.4 | No | $29/mo | Yes | — | Yes | Yes |
| 17 | Zally | 5.4 | No | — | — | — | Yes | Yes |
| 18 | API Validator | 5.2 | No | — | Yes | — | Yes | Yes |
| 19 | API Architect | 5.1 | No | — | Yes | — | Yes | Yes |
| 20 | Apistaq | 5.1 | No | — | Yes | — | — | — |
| 21 | TeejLab API Discovery and Lifecycle Manager | 4.8 | No | — | No | — | — | — |
| 22 | Wag-Tail API Collaboration Portal | 4.8 | No | — | No | — | Yes | — |
Is your app on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which API governance software is ranked first on Freedom251?
ATA API Governance is ranked #1 of 22 with a score of 6.7. oasdiff is second and Postman third.
How many of these have a free plan?
11 of the 22 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, DigitalAPI has the lowest first paid tier we found: $2.50/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.