18.3
Kill Bill is an open-source, programmable billing platform with APIs for pricing models, subscriptions, invoices, and payment gateway integrations.
Free planOpen sourceWebAPILinux
Best Subscription Billing Software in 2026
Subscription billing software is designed for recurring charges and the workflows around customer payments and plan changes. Compare customer billing portals, dunning automation, and proration controls, as well as multi-currency and usage-based billing. Tax automation may matter too, depending on how you handle customer charges. Free-plan availability and paid-from pricing help you weigh cost alongside the available…
28.0
Free planOpen sourceWebAPILinux
37.9
UniBee is an open-source subscription billing platform available as self-hosted software or managed cloud service.
Free planOpen sourceWebAPISelf-hosted
- 4
Recurly
Recurly is web-based subscription billing software from Recurly, a company founded in 2009 and headquartered in San Francisco.
AndroidiOSWebAPI7.8From $249 a month - 5
Zoho Billing
Zoho Billing is a paid service for creating recurring invoices, collecting online payments, and managing customer billing.
AndroidiOSWebAPI7.8From $39 a month - 6
BillingServ
AndroidiOSWebAPI7.7From £50 a year - 7
Paymenter
Paymenter is an open-source billing platform tailored to hosting companies.
Free planOpen sourceWebAPILinuxSelf-hosted7.7From €5 a month - 8
FastSpring
FastSpring is a merchant of record for companies selling digital products, including SaaS and software.
Free planAndroidiOSWebAPI7.6Free plan - 9
InstaPayments
AndroidiOSWebAPI7.6From $25 a month - 10
PaySimple
PaySimple is a paid platform for business payments, billing, and customer management.
AndroidiOSWebAPI7.6From $49.95 a month - 11
Billsby
Billsby manages subscriptions, recurring billing, invoicing, and customer lifecycle tasks.
Free planWebAPI7.5From $45 a month - 12
Churn Buster
Free planWebAPI7.5From $269 a month - 13
Lago
Lago is an open-source billing platform that links product usage and commercial terms to customer invoices.
Free planOpen sourceWebAPISelf-hosted7.5Free plan - 14
PayWhirl
PayWhirl provides subscription billing software for recurring subscriptions, memberships, payment plans and invoices.
Free planWebAPI7.4From $9 a month - 15
Rerun
Rerun is a web app for recurring, subscription, and membership invoices and payments.
Free planWeb7.4$1.49 one-time - 16
Younium
Younium is a subscription management platform for B2B SaaS and technology companies.
AndroidiOSWebAPI7.4From 500 SEK a month - 17
Fakturia
WebAPI7.3From €1.90 a month - 18
Pabbly Subscriptions
Free planWebAPI7.3From $14 a month - 19
FOSSBilling
FOSSBilling is free, open-source billing and client-management software for hosting and other online service businesses.
Free planOpen sourceWebAPILinuxSelf-hosted7.2Free plan - 20
GetPaidHQ
GetPaidHQ is open-source subscription billing software that can run on your infrastructure and connect to a payment processor of your choice.
Free planOpen sourceWebAPISelf-hosted7.1Free plan - 21
Meteroid
Meteroid brings subscription management, usage-based pricing, invoicing, and revenue tools together for SaaS, infrastructure, and AI companies.
Open sourceWebAPISelf-hosted7.1From €219 a month - 22
ChargeOver
WebAPI6.7From $229 a month - 23
Tridens Monetization
Tridens Monetization is billing, charging, and revenue management software for businesses with subscription, consumption-based, or hybrid models.
WebAPI6.7From $500 a month - 24
Maxio
Maxio combines billing and financial reporting in a quote-to-cash platform for B2B SaaS and AI companies.
WebAPI6.5From $599 a month - 25
BillingPlatform Accounts Receivable
BillingPlatform Accounts Receivable automates payment collection, credits, refunds, and management of overdue accounts.
WebAPI6.4