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Head-to-head · API Monetization Software

Lago vs Sentinel EMS

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Lago #6 in API Monetization Software 8.5/10 Free plan Free plan✓ 0 of 5 features Visit Lago
Sentinel EMS #8 in API Monetization Software 8.2/10 Pricing on request ✓ 5 of 5 features Visit Sentinel EMS

Lago leads on 0 checks, Sentinel EMS on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreLago · 8.5/10
  • Free planonly Lago
  • Most featuresSentinel EMS · 5 of 5

Lago scores higher on our rubric for api monetization software: 8.5 against 8.2 out of 10; our editors rank them #6 and #8.

Lago is the better fit for open-source API billing teams. Sentinel EMS is the better fit for software vendors managing licenses and entitlements.

  • Lago fits best

    Open-source API billing teams

  • Sentinel EMS fits best

    Software vendors managing licenses and entitlements

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Lago 8.5/10 Visit ↗ Sentinel EMS 8.2/10 Visit ↗
At a glance
Editor score 8.5 8.2
Ranking #6 in API Monetization Software #8 in API Monetization Software
Best for Open-source API billing teams Software vendors managing licenses and entitlements
Pricing model Free Paid
Starting price Free Pricing on request
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web Web
Integrations 7 integrations 5 integrations
Features Lago 0/5 · Sentinel EMS 5/5
Usage metering Not checked yet ✓ (best)
Subscription billing Not checked yet ✓ (best)
Overage billing Not checked yet ✓ (best)
API plan builder Not checked yet ✓ (best)
Developer portal Not checked yet ✓ (best)
Specs
Payment gateway support Not checked yet Third_party
Supported billing models Not checked yet subscription, usage-based, pay-as-you-go, prepaid, postpaid, hybrid, perpetual, seat-based, per-use
Our review
Pros
  • Self-hosted AGPLv3 software with usage metering
  • Supports subscription, usage-based, prepaid, and hybrid pricing
  • REST API, SDKs, webhooks, portals, and payment integrations
  • Supports subscription, perpetual, seat-based, and per-use licensing
  • Measures usage, calculates overages, and sends webhook notifications
  • Provides vendor, customer, and partner self-service portals
Cons
  • Payment processing runs through connected providers
  • Premium pricing is provided after contacting Lago
  • Automatic dunning is available only with Lago Premium
  • Payment gateway functionality relies on third-party billing systems
  • UBMM currently applies to Services enforcement and requires an active subscription
  • Initial UBMM onboarding involves Thales Professional Services
Our verdict

Lago is an open-source billing platform for companies that charge through usage-based, subscription, prepaid, or hybrid pricing. It is aimed primarily at engineering and finance teams that need programmable billing workflows for APIs or…

Read the review →

Sentinel EMS is Thales’ web-based licensing and entitlement management platform for software and hardware vendors. It is designed for teams that need to package products, generate licenses and entitlements, manage activation and renewals,…

Read the review →
  1. LagoAPI Monetization Software 8.5Free plan
  2. Sentinel EMSAPI Monetization Software 8.2Pricing on request

Strengths and trade-offs

  • Lago — where it wins

    • Self-hosted AGPLv3 software with usage metering
    • Supports subscription, usage-based, prepaid, and hybrid pricing
    • REST API, SDKs, webhooks, portals, and payment integrations

    Where it doesn't

    • Payment processing runs through connected providers
    • Premium pricing is provided after contacting Lago
    • Automatic dunning is available only with Lago Premium

  • Sentinel EMS — where it wins

    • Supports subscription, perpetual, seat-based, and per-use licensing
    • Measures usage, calculates overages, and sends webhook notifications
    • Provides vendor, customer, and partner self-service portals

    Where it doesn't

    • Payment gateway functionality relies on third-party billing systems
    • UBMM currently applies to Services enforcement and requires an active subscription
    • Initial UBMM onboarding involves Thales Professional Services

More comparisons

All API monetization software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update