Express Checkout is a PayPal API payment system that allows users to accept payments from PayPal accounts. This API is free to use.

Knife is a powerful command-line interface (CLI) that comes with Chef.

The Spring Data Neo4j project, as part of the Spring Data initiative, aims to simplify development with the Neo4j graph database. Like JPA, it uses annotations on simple POJO domain objects. Together with metadata, the annotations drive mapping the POJO entities and their fields to nodes, relationships, and properties in the graph database.

Reader specifies a software that can read files of a specific format or a hardware gadget that can read some memory card or similar device.

Adapters are the server-side code of applications that are deployed on and serviced by IBM® MobileFirst Platform Foundation (formerly IBM Worklight Foundation). Adapters connect to enterprise applications (otherwise referred to as back-end systems), deliver data to and from mobile applications, and perform any necessary server-side logic on this data.

Durable Functions is an extension of Azure Functions and Azure WebJobs that lets you write stateful functions in a serverless environment. The extension manages state, checkpoints, and restarts for you.

A Babel transpiler to assist with the conversion of ES6 to ES5 for the Jest testing framework.

The Model Derivative API enables users to represent and share their designs in different formats, as well as to extract valuable metadata. Offers translation of design into different formats (such as STL and OBJ), also prepares for web viewing, extract properties, geometry parts and thumbnails.

The deprecated HTML Application Cache (AppCache) feature is intended to allow you to specify files for browsers to cache and make available to users when offline. Service Workers now address all use cases the AppCache feature was intended for.

ITK is an open-source, cross-platform system that provides developers with an extensive suite of software tools for image analysis. SimpleITK is a simplified layer built on top of ITK, intended to facilitate its use in rapid prototyping, education, interpreted languages.