NDB is a better datastore API for the Google App Engine Python runtime. It provides an improved interface over ext.db, and includes support for parallel processing with coroutines.

SAP PowerBuilder — programming language and IDE from SAP (formerly Sybase). Very popular in the early 90s before being eclipsed by Visual Studio and failing to provide an adequate solution for web applications. Outside of StackOverflow, the best resource for PowerBuilder help is the Appeon PowerBuilder Community. Also possibly of interest: The International Sybase User Group, PowerBuilder Journal

Key and Certificate Management Tool: manages a keystore (database) of cryptographic keys, X.509 certificate chains, and trusted certificates.

In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n.

multi-touch refers to a touch sensing surface's (trackpad or touchscreen) ability to recognize the presence of two or more points of contact with the surface (Wikipedia)

Coming immediately after in a sequence; subsequent. Often refers to iterators that provide next() and hasNext() methods. Please, do not use this tag for Next.js related questions (use [next.js] instead).

Swift Playgrounds are interactive design environments that evaluate code as you write it. Intermediate results of the code are shown in a right-hand pane.

D-Bus is a message bus system, which allows client programs to call procedures on a service - basically, the machine-local equivalent to XML-RPC and SOAP.

Free Pascal is a multi-dialect, multi-platform Object Pascal compiler. Originally started to replace the retired Turbo Pascal compiler, it now attempts to follow the Delphi dialect still being developed by Embarcadero Technologies. It has compiler modes for Delphi, Turbo Pascal and Mac Pascal. It also has two modes for its own superset dialect: One mode with exceptions, classes and interfaces, and mode one without.

A toolbar is a control that displays one or more buttons, called toolbar items. A toolbar momentarily highlights or does not change the appearance of an item when tapped.

The Windows Identity Foundation is a free Microsoft library that enables claims based authentication and use federated identity/single sign-on in their applications.