Best API Developer Portal Software in 2026
Updated
In short: Apinizer is ranked #1 of 31 as of 4 October 2026, ahead of Gravitee API Gateway and Kong Gateway. The best-ranked option with a free plan is Gravitee API Gateway. The lowest first paid tier on this page is DigitalAPI at $2.50/mo.
When developers need to find and work with published APIs, portal software can bring catalogs, documentation, and access together. Compare API catalog features and interactive API docs, then consider developer authentication, custom domains, and portal deployment options. Apinizer, Gravitee API Gateway, and Kong Gateway are among the entries shown. Usage analytics offers another point of comparison for understanding portal activity. Free-plan availability and paid-from pricing can help you assess cost alongside the technical details. Weigh the listed capabilities against how you publish APIs and the kind of discovery and access experience your developers need.
31 API developer portal software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
7 of the 25 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 | ApinizerWeb · Windows · Linux · Self-hosted | Three bars | — | 3 of 6 | Free | 6.5 | |
| 2 | Gravitee API GatewayWeb · Windows · Linux · Self-hosted · API | Three bars | — | 3 of 6 | $2,500/mo | 6.5 | |
| 3 | Kong GatewayWeb · Linux · Self-hosted · API | Two bars | — | 2 of 6 | Free | 6.5 | |
| 4 | Workato Developer API PortalWeb · API | Two bars | — | 1 of 6 | $100/mo | 6.4 | |
| 5 | ZuploWeb · Linux · Self-hosted · API | Two bars | — | 2 of 6 | $25/mo | 6.4 | |
| 6 | Apigee API hubWeb · API | Two bars | — | 1 of 6 | Free | 6.3 | |
| 7 | ReadMeWeb | Two bars | — | 1 of 6 | $250/mo | 6.3 | |
| 8 | Oracle IntegrationWeb · API | One bar | — | — | 1 of 6 | — | 5.5 |
| 9 | Tyk API ManagementWeb · Linux · Self-hosted · API | One bar | — | — | 2 of 6 | — | 5.5 |
| 10 | DigitalAPIWeb · Self-hosted · API | One bar | — | — | 1 of 6 | $2.50/mo | 5.4 |
| 11 | F5 BIG-IP APMWeb · Windows · Mac · Linux · Android · iPhone · Self-hosted · API | Two bars | — | — | 6 of 6 | — | 5.4 |
| 12 | SnapLogicWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 13 | Waygrid API Developer PortalWeb · API | One bar | — | — | 1 of 6 | — | 5.4 |
| 14 | API PortalWeb · Windows · Mac · Linux · Self-hosted · API | Two bars | — | — | 4 of 6 | — | 5.2 |
| 15 | WSO2 API DesignerWeb · Windows · Mac · Linux · Extension | Two bars | — | — | 4 of 6 | $119/mo | 5.2 |
| 16 | Sensedia API ManagementWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 17 | API7 EnterpriseWeb · Linux · Self-hosted · API | One bar | — | — | 2 of 6 | — | 5.0 |
| 18 | ApimanWeb | No signal | — | — | 1 of 6 | — | 5.0 |
| 19 | APIwizNo platforms listed | No signal | — | — | 0 of 6 | — | 5.0 |
| 20 | BoomiWeb · Self-hosted · API | One bar | — | — | 1 of 6 | $99/mo | 5.0 |
| 21 | FusioWeb | No signal | — | — | 1 of 6 | — | 5.0 |
| 22 | ApiableWeb · Self-hosted · API | No signal | — | — | 1 of 6 | — | 4.9 |
| 23 | FrendsWeb | One bar | — | — | 1 of 6 | — | 4.9 |
| 24 | MuleSoft ComposerWeb | One bar | — | — | 1 of 6 | $2,000/mo | 4.9 |
| 25 | webMethods API ManagementWeb · Self-hosted · API | One bar | — | — | 1 of 6 | — | 4.9 |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which API developer portal software is ranked first on Freedom251?
Apinizer is ranked #1 of 31 with a score of 6.5. Gravitee API Gateway is second and Kong Gateway third.
How many of these have a free plan?
7 of the 25 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. Paid placements never change a rank.