The Rebilly .NET SDK by Rebilly offers a subscription and billing platform that can be integrated with existing applications. It supports functions such as "charge", and "transaction".
RevenueCat is live with its SDK approach to in-app subscriptions across platforms. After a half-year beta, RevenueCat has launched v1.0 of its SDKs and API. The goal of the company is to handle all things in-app subscriptions so app developers don't need to rely on app store subscription APIs.
Caliber recently launched an app that allows users to instantly chat with LinkedIn business contacts. The app is driven through its integration with the LinkedIn API.
