Chargebee - Chargebee lets you manage subscriptions and payments at scale, handle custom recurring billing scenarios, reduce subscription churn and simplify accounting.
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Recurly - Subscription billing and recurring billing management. Recurly offers enterprise-class subscription billing for thousands of companies worldwide.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Zuora - Zuora creates cloud-based software on a subscription basis that enables any company in any industry to successfully launch, manage, and transform into a subscription business.
foobar2000 - An advanced freeware audio player for the Windows platform.