Best API Monetization Software in 2026
Updated
In short: Gravitee API Gateway is ranked #1 of 37 as of 4 October 2026, ahead of Kong Gateway and Lago. The best-ranked option with a free plan is Kong Gateway. The lowest first paid tier on this page is DigitalAPI at $2.50/mo.
For software that charges for API access, compare how each option handles plans, metering, and billing. The ranking weighs API plan builder and developer portal features alongside usage metering, overage billing, and subscription billing. Supported billing models and payment gateway support show what billing approaches are represented, while free plans and paid-from pricing add cost details. Stigg, Lago, and Gotransverse are among the first entries, followed by Revenium and Orb. Consider how you intend to package access and measure usage, then check whether the listed billing options and portal features suit that approach.
37 API monetization software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 Gravitee API Gateway Top pick · 7.2 Free plan · $2,500/mo
#2 Kong Gateway Runner-up · 7.0 Free plan · Free
#3 Lago Also great · 6.9 Free plan · Free
- Free plan apiLinuxself-hostedWebWindows
- Free plan
- Yes
- Paid from
- 2,500 /mo
RecognisedDocumentedFree planPlatforms$2,500/mofirst paid tier About Gravitee API GatewayVisit site - Free planFree trial apiLinuxself-hostedWeb
- Free plan
- No
- Paid from
- 25 /mo
RecognisedDocumentedFree planPlatforms - Free plan apiself-hostedWeb
- Free plan
- Yes
RecognisedDocumentedFree planPlatformsFree About LagoVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 399 /mo
- Usage metering
- Yes
- Subscription billing
- Yes
- Overage billing
- Yes
- API plan builder
- Yes
RecognisedDocumentedFree planPlatforms$399/mofirst paid tier About StiggVisit site - Free planFree trial apiLinuxself-hostedWeb
- Free plan
- Yes
- Paid from
- 25 /mo
RecognisedDocumentedFree planPlatforms$25/mofirst paid tier About ZuploVisit site - Free planFree trial apiself-hostedWeb
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free planFree trial apiWeb
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free trial apiLinuxmacOSself-hostedWebWindows
- Usage metering
- Yes
- Subscription billing
- Yes
- Overage billing
- Yes
- API plan builder
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiWeb
- Free plan
- No
RecognisedDocumentedFree planPlatforms - Free plan Web
- Free plan
- Yes
- Paid from
- 500 /mo
RecognisedDocumentedFree planPlatforms$500/mofirst paid tier About FlexpriceVisit site - AndroidapiiOSself-hostedWeb
- Usage metering
- Yes
- Subscription billing
- Yes
RecognisedDocumentedFree planPlatforms - Free trial apiLinuxself-hostedWeb
- Free plan
- No
RecognisedDocumentedFree planPlatforms - Free trial extensionLinuxmacOSWebWindows
- Free plan
- No
RecognisedDocumentedFree planPlatforms$119/mofirst paid tier About WSO2 API DesignerVisit site - apiWebRecognisedDocumentedFree planPlatforms
- Free trial apiself-hostedWebRecognisedDocumentedFree planPlatforms$2.50/mofirst paid tier About DigitalAPIVisit site
- Free trial apiself-hostedWeb
- Free plan
- No
- Paid from
- 99 /mo
RecognisedDocumentedFree planPlatforms$99/mofirst paid tier About BoomiVisit site - apiWebRecognisedDocumentedFree planPlatforms$37,500/mofirst paid tier About GotransverseVisit site
- Free trial apiLinuxself-hostedWeb
- Free plan
- No
RecognisedDocumentedFree planPlatforms - Free trial apiself-hostedWeb
- Free plan
- No
- Usage metering
- Yes
- Subscription billing
- Yes
- Overage billing
- Yes
- API plan builder
- Yes
RecognisedDocumentedFree planPlatforms$5,339/mofirst paid tier About SAP API ManagementVisit site - apiWeb
- Free plan
- No
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
RecognisedDocumentedFree planPlatforms$2,000/mofirst paid tier About MuleSoft ComposerVisit site - Web
- Free plan
- No
RecognisedDocumentedFree planPlatforms - apiself-hostedWeb
- Free plan
- No
RecognisedDocumentedFree planPlatforms -
- Free plan
- No
- Paid from
- 599 /mo
RecognisedDocumentedFree planPlatforms$599/mofirst paid tier About MaxioVisit site - api
- Free plan
- No
RecognisedDocumentedFree planPlatforms
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 monetization software is ranked first on Everything Xiaomi?
Gravitee API Gateway is ranked #1 of 37 with a score of 7.2. Kong Gateway is second and Lago third.
How many of these have a free plan?
9 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 on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.