Flexprice provides usage metering, billing, and feature management for AI and SaaS products.
Free plan Open source WebLinuxAPISelf-hosted
- Home
- Developer Tools
- API Monetization Software
Best API Monetization Software 2026
Facts read 23 Sep 2026 – 21 Oct 2026
API monetization software helps businesses set up ways to charge for API access, such as subscriptions or usage-based billing. This guide is for teams comparing tools to manage API plans, metering, payments and developer access.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 Flexprice | Flexprice provides usage metering, billing, and feature management for AI and SaaS products. | 5.7 | Free plan | Free plan | Web, Linux, API, Self-hosted | 20 Oct 2026 |
| 02 Zuplo | Zuplo provides API, AI, and MCP gateways with security controls and OpenAPI docs for web and self-hosted use. | 5.4 | $25 a month | Free plan | Web, Linux, API, Self-hosted | 15 Oct 2026 |
| 03 Lago | Lago is open-source billing software for API, web, or self-hosted use, with recurring invoices, payments, and reminders. | 5.3 | Free plan | Free plan | Web, API, Self-hosted | 15 Oct 2026 |
| 04 Boomi | Boomi is an API and integration platform that runs on Linux, Windows, the web, and self-hosted systems. | 5.0 | — | Free trial | Web, Windows, Linux, API | 21 Oct 2026 |
| 05 Revenium | Revenium tracks AI costs and attributes model, agent, and tool calls to teams, customers, features, and agents. | 4.8 | Free plan | Free plan | Web, API | 15 Oct 2026 |
| 06 Moesif | Moesif tracks API usage and customer consumption with analytics for REST, GraphQL, SOAP, and RPC. | 4.7 | Free plan | Free plan | Web, API, Self-hosted | 3 Oct 2026 |
| 07 SAP Extended Enterprise Content Management by OpenText | 4.7 | — | — | Android, iPhone & iPad, Web, Windows | 11 Oct 2026 | |
| 08 Stigg | Stigg manages usage entitlements, credits, and metering for customers, users, and agents. | 4.7 | $399 a month, billed yearly | Free plan | Web, API, Self-hosted | 29 Sep 2026 |
| 09 Tyk API Management | Tyk API Management provides tools to develop, operate, govern, and publish APIs across multiple protocols. | 4.6 | Free plan | Free plan | Web, Linux, API, Self-hosted | 2 Oct 2026 |
| 10 DigitalAPI | DigitalAPI brings APIs from multiple gateways into a self-service catalogue for discovery, subscriptions, and monetization. | 4.5 | $2,500 a month | Free trial | Web, API, Self-hosted | 15 Oct 2026 |
Compare the billing models and features you need, then check platform support and whether a free plan or trial is available. The list order can change, so use those details to assess fit rather than treating placement as a recommendation.
02
Zuplo
Zuplo provides API, AI, and MCP gateways with security controls and OpenAPI docs for web and self-hosted use.
WebLinuxAPI+1 Record5.4 Visit
03
Lago
Lago is open-source billing software for API, web, or self-hosted use, with recurring invoices, payments, and reminders.
WebAPISelf-hosted Record5.3 Visit
04
Boomi
Boomi is an API and integration platform that runs on Linux, Windows, the web, and self-hosted systems.
WebWindowsLinux+2 Record5.0 Visit
05
Revenium
Revenium tracks AI costs and attributes model, agent, and tool calls to teams, customers, features, and agents.
WebAPI Record4.8 Visit
6
Moesif
WebAPISelf-hosted Free plan Record4.7 Visit Moesif tracks API usage and customer consumption with analytics for REST, GraphQL, SOAP, and RPC.
8
Stigg
WebAPISelf-hosted $399 a month, billed yearly Record4.7 Visit Stigg manages usage entitlements, credits, and metering for customers, users, and agents.
9
Tyk API Management
WebLinuxAPI+1 Free plan Record4.6 Visit Tyk API Management provides tools to develop, operate, govern, and publish APIs across multiple protocols.
10
DigitalAPI
WebAPISelf-hosted $2,500 a month Record4.5 Visit DigitalAPI brings APIs from multiple gateways into a self-service catalogue for discovery, subscriptions, and monetization.
11
Younium
AndroidiPhone & iPadWeb+2 500 SEK a month Record4.5 Visit Younium manages B2B SaaS subscriptions from quoting and contracts through billing and revenue recognition.
12
Sentinel EMS
WebWindowsMac+3 — Record4.4 Visit Sentinel EMS manages software licenses and entitlements across on-premises, cloud, and hybrid deployments.
13
OpenMeter
WebAPISelf-hosted Free plan Record4.2 Visit OpenMeter measures usage, manages access, and supports pricing and billing for AI, API, and SaaS products.
15
API7 Enterprise
WebLinuxAPI+1 — Record4.1 Visit API7 Enterprise manages APIs across teams and environments with a centralized control plane and Apache APISIX data plane.
17
Layer7 API Management
AndroidiPhone & iPadWeb+2 — Record4.0 Visit Layer7 suits organizations that need API publishing, consumer onboarding, governance and lifecycle management across deployment models.
18
Fiorano API Management
WebAPISelf-hosted — Record3.9 Visit Fiorano API Management runs across web and self-hosted environments in a hybrid deployment.
19
Maxio
WebAPI $599 a month, billed yearly Record3.9 Visit Maxio is a web-based billing platform with recurring invoices and online payments.
20
Metronome
WebAPI — Record3.9 Visit Metronome combines metering, pricing, billing, and reporting for software businesses.
21
Orb
WebAPI — Record3.9 Visit Orb is a billing platform with recurring invoices and online payments.
22
Kong Konnect
WebWindowsMac+1 $25 a month Record3.8 Visit Kong Konnect is a web platform with a developer portal and API catalog, available for Linux, macOS, and Windows.
23
Gotransverse
WebAPI — Record3.7 Visit Gotransverse is a SaaS billing and revenue management platform for subscription, usage, and other pricing models.
24
Zuora Billing
WebAPI — Record3.7 Visit Zuora Billing issues recurring invoices, accepts online payments, and sends payment reminders.
Before you choose
Match the billing model to your plans
Compare supported billing models, subscription billing and overage billing. These options help you determine whether a tool fits the way you intend to charge API customers.
An API plan builder can help configure plans. Check its capabilities against the plans you need to offer.
Check usage metering
Usage metering matters when charges depend on API activity. Compare whether the software supports usage metering and how that fits with the billing models you need.
Review payments and developer access
Payment gateway support and a developer portal are separate comparison points. Check that the tool supports the payment flow and developer access your business needs.
Confirm platform support and trial options
Platform availability varies across web, API, self-hosted, Linux, Windows and macOS. Confirm that the platform you plan to use is supported.
A free plan and a free trial are different ways to evaluate software. Check the listed terms before choosing a tool; pricing may also be available on request.
Questions
What features should I compare in API monetization software?
Compare usage metering, subscription and overage billing, API plan building, payment gateway support, developer portals and supported billing models.
Does API monetization software always include a free plan?
No. The list includes paid, freemium and free pricing models. Check the individual tool's pricing details for a free plan or trial.
Which platforms should I check for?
Platform options include web, API, self-hosted, Linux, Windows and macOS. Confirm support for the environment you intend to use.
Are free plans and free trials the same?
No. A free plan is an ongoing pricing option; a free trial provides temporary access. Check the tool's terms for details.
What if a tool does not publish a price?
Some tools list pricing as available on request. Contact the maker for pricing details.
More in Developer Tools
Accessibility Testing Software 169Log Management Software 111AI Coding Assistants 103Package Managers 93AI Agent Platforms 73Reverse Engineering Tools 73Integrated Development Environments 65Software Composition Analysis Software 65Artifact repository software 64Browser Automation Tools 62Version Control Software 62Container Registries 60Code Playground Software 58Continuous Integration Software 58Network Monitoring 55Kubernetes Monitoring 54Database Client Software 53IDE Software 53