The Managed Extensibility Framework or MEF is a library for creating lightweight, extensible applications. Sakai was designed to be scalable, reliable, interoperable and extensible. It is highly configurable and extensible. TDD can lead to more modularized, flexible, and extensible code. By design, the ELF format is flexible, extensible, and cross-platform. It contains several database implementations, including a B-tree and one built around extensible hashing. Instead, they assist in the creation of extensible, flexible test benches. Intel developed the original Extensible Firmware Interface (EFI) specifications. It's also completely extensible and customizable. This stands for the Lightweight Extensible Authentication Protocol. This stands for Protected Extensible Authentication Protocol. Dynamic WEP refers to the combination of 802.1x technology and the Extensible Authentication Protocol. WhatsApp uses a customized version of the open standard Extensible Messaging and Presence Protocol (XMPP). Ionic includes mobile components, typography, interactive paradigms, and an extensible base theme. Elixir also provides productive tooling and an extensible design.