FastSpring vs Kill Bill
FastSpring
fastspring.comKill Bill
killbill.ioSide by side
| Figure | FastSpring | Kill Bill |
|---|---|---|
| Price from | Free | $9,999/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 3 | 5 |
| Spec score · Payment Processing Software | 8.8 (#10) | 9.2 (#4) |
| Spec score · Dunning Management Software | 8.7 (#9) | 9.1 (#4) |
| Spec score · Subscription Billing Software | 8.7 (#10) | 9.1 (#3) |
| Spec score · Billing And Invoicing Software | 8.8 (#6) | 9.1 (#5) |
| Founded | FastSpring says it was founded in 2005. | 2010 |
| Integrations | Listed integrations include Google Tag Manager, Zapier, Nalpeiron, LicenseSpot, Soraco QLM, SoftwareKey, Drip, AdRoll, Bing Ads and multiple licensing services. | The maker lists Stripe, Adyen, PayPal, Braintree, GoCardless, Coinbase, Avalara, and Vertex among its integrations. |
| Rating on Capterra | 4.2 out of 5 from 37 reviews | 4.7 out of 5 from 17 reviews |
| Rating on G2 | 4.5 out of 5 from 204 reviews | 4.5 out of 5 from 2 reviews |
| Rating on GetApp | 4.2 out of 5 from 37 reviews | 4.7 out of 5 from 17 reviews |
| Rating on Software Advice | 4.2 out of 5 from 37 reviews | 4.7 out of 5 from 17 reviews |
| Subscription management | The platform supports recurring billing, subscription plans, upgrades and customer-lifecycle management. | The platform can create, change, pause, resume and cancel subscriptions with configurable policies and proration. |
| Support | FastSpring directs sellers to its Support & Documentation resources and provides developer documentation and a support case portal. | The self-hosted open-source option includes community support, while paid support tiers are separately purchased for customer-managed deployments. |
| System requirements | FastSpring is delivered as a hosted web service; its onboarding documentation describes browser-based checkouts and does not specify a client installation requirement. | Docker deployment requires Docker Compose and at least 4 GiB of memory; Tomcat deployment uses JDK 11, Tomcat 9.0.x and MySQL, MariaDB or PostgreSQL. |
| Webhooks | JSON webhooks let applications react to FastSpring events while reducing polling API calls. | Push notifications POST tenant events to a registered URL and retry when the endpoint does not return a 2xx response. |
| What it does | FastSpring is a merchant-of-record platform for SaaS, software, games and other digital products that handles checkout, payments, taxes, subscriptions and compliance. | Kill Bill is an open-source platform for subscription billing, usage billing, invoicing and payments. |
Plans
FastSpring
- Free test modeFree
- Custom quotePriced on request
- Custom revenue-sharePriced on request
Kill Bill
- Kill Bill open sourceFree
- Self-Hosted Open SourceFree
- Aviate$9,999 a month
- AWS MarketplacePrice not published
- Hosted Platform (ChaChing)Priced on request
In their own words
FastSpring
FastSpring has no write-up on Specifiction yet; its figures are above.
Kill Bill
Kill Bill is an open-source, programmable billing platform with APIs for pricing models, subscriptions, invoices, and payment gateway integrations. It supports usage-based billing, and plugins connect its payment platform to gateways, issuing banks, and fraud tools. The web-based Kaui back-office interface lets teams configure price books and manage subscriptions and payments. Listed integrations include Stripe, Adyen, PayPal, Braintree, GoCardless, Coinbase, Avalara, and Vertex. Installation options include Docker and Tomcat; Kill Bill can run on Windows, Mac, or Linux computers, or on a Linux cloud server. Described security controls include encryption at rest and in transit, TLS communications, AES-256 stored-data encryption, audit logs, role-based access, and multi-tenant isolation. The self-hosted open-source option includes community support, but customers operate and upgrade it; paid support tiers are purchased separately for customer-managed deployments. The AWS Marketplace option is listed at ~$40/mo, plus AWS infrastructure costs. Hosted-platform pricing follows a separate commercial model. The maker describes the product as serving online businesses, customization-focused teams, startups, and growth-stage companies.