Free and open first

Best API Monetization Software in 2026

If you sell access to an API, monetization software can help define plans, measure usage, and handle billing. Compared on API plan builder, developer portal, usage metering, overage billing, and subscription billing, these entries show capabilities relevant to packaging and charging for access. Supported billing models and payment gateway support add further points to compare. Review free-plan availability and paid-from pricing for cost context. Gravitee API Gateway, Kong Gateway, and Lago are among the named options. Consider how you intend to charge customers and whether the listed billing and portal features align with that approach.

41 apps
Research read 23 Sept 2026
How the order is worked out

1

Flexprice

Free plan Open source APILinuxSelf-hosted+1

Choose Flexprice if you need subscription, usage-based, or hybrid billing and want to begin with a free plan.

9.1 Free plan · paid from $500/mo · 30-day trial Visit site
2

Lago

Free plan Open source APISelf-hostedWeb

Lago covers multiple billing models and gives developers several connection options, including separate metering for AI token categories.

8.8 Free plan Visit site
3

Moesif

Free plan APISelf-hostedWeb

Moesif combines API usage analysis, monitoring, and monetization tools in a managed service.

7.1 Free plan · 14-day trial Visit site
4

Tyk API Management

Free plan APILinuxSelf-hosted+1

Tyk suits teams seeking API gateway controls alongside lifecycle management, analytics, and deployment choice.

7.0 Pricing on request · 2-day trial Visit site
5

Stigg

Free plan APISelf-hostedWeb

Stigg brings usage metering, credits, entitlements, and budget enforcement into one runtime.

6.9 Free plan · paid from $399/mo (annual) Visit site
6

Zuplo

Free plan APILinuxSelf-hosted+1

Zuplo combines API management with AI and MCP gateway capabilities and a hosted developer portal. Free has a stated request and member limit; Builder costs $25/mo before additional request charges.

6.9 Free plan · paid from $25/mo Visit site
7

OpenMeter

Free plan APISelf-hostedWeb

OpenMeter combines real-time usage metering, access controls, and billing tools, with self-hosted and managed deployment options.

6.8 Open source Visit site
8

Revenium

Free plan APIWeb

6.8 Free plan · 30-day trial Visit site
9

Gravitee API Management

Free plan LinuxWebWindows

6.7 Free plan · paid from $2,500/mo · 14-day trial Visit site
10

API7 Enterprise

Free trial APILinuxSelf-hosted+1

API7 Enterprise combines lifecycle management, gateway policies, developer documentation, analytics, and multi-cluster organization.

6.6 Pricing on request Visit site
11

Automic Continuous Delivery Automation

Free trial APILinuxSelf-hosted+1

6.5 Pricing on request Visit site
12

Boomi
by Boomi
Free trial APILinuxSelf-hosted+2

Boomi brings integration, automation, data, API, and B2B/EDI functions into one hybrid platform.

6.4 From $99/mo · 30-day trial Visit site
13

DigitalAPI

Free trial APISelf-hostedWeb

Choose DigitalAPI if your organization needs a shared catalogue and management features across multiple API gateways, or wants to make APIs available to AI agents.

6.3 Pricing on request Visit site
14

Fiorano API Management
by Fiorano API Management
Free trial APISelf-hostedWeb

Fiorano API Management combines lifecycle controls, publishing, analytics, security, and gateway resilience for enterprise API programs.

6.3 Pricing on request · 45-day trial Visit site
15

Apiable

Paid APISelf-hostedWeb

Choose Apiable if your team needs a branded partner portal, API product plans, and billing tied to an existing gateway.

5.9 Pricing on request Visit site
16

SAP API Management

Free trial APISelf-hostedWeb

SAP API Management provides lifecycle controls, security, analytics, and developer tooling for enterprise API programs. Its listed editions carry substantial monthly prices and message allowances.

5.9 30-day trial Visit site
17

Layer7 API Management

Paid AndroidAPIiPhone+2

Layer7 combines API publishing, consumer access, governance, and lifecycle tooling in one management offering.

5.7 Pricing on request Visit site
18

Sentinel EMS

Free trial APILinuxMac+3

5.7 Pricing on request Visit site
19

LogiSense Billing

Paid APISelf-hostedWeb

LogiSense Billing covers usage capture, rating, payment collection, and invoicing for complex billing arrangements.

5.6 Pricing on request · 30-day trial Visit site
20

Gotransverse

Paid APIWeb

Gotransverse covers varied billing models, product pricing rules, and configurable revenue recognition. Pricing is on request, while the listed Accelerate plan carries a 36-month contract.

5.5 Pricing on request Visit site
21

SAP Extended Enterprise Content Management by OpenText
by SAP Extended Enterprise Content Management by OpenText
Paid AndroidiPhoneLinux+4

5.5 Pricing on request Visit site
22

Aria Billing

Paid APIWeb

Aria Billing is suited to organisations managing complex billing models, usage, and account structures.

5.4 Pricing on request Visit site
23

m3ter

Paid APIWeb

m3ter covers usage data processing, rating, and billing automation for complex charging models. It is not a complete invoicing or revenue recognition system, so those functions need separate tools.

5.4 Pricing on request Visit site
24

Maxio
by Maxio
Paid APIWeb

Consider Maxio if your B2B SaaS or AI business needs flexible billing, revenue recognition, and SaaS financial metrics in one platform.

5.4 From $599/mo Visit site
25

Metronome

Paid APIWeb

Metronome brings metering, pricing, invoicing, reporting, integrations, and spend visibility into one hosted service.

5.4 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

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