The Apache Project is an effort to develop and maintain an open-source HTTP server for modern operating systems including UNIX and Windows. The goal of this project is to provide a secure, efficient and extensible server that provides HTTP services in sync with the current HTTP standards.
Bootstrap is a free and open-source front-end framework for designing websites and web applications. It contains HTML and CSS-based design templates for typography, forms, buttons, navigation and other interface components, as well as optional JavaScript extensions.
Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
Asterisk is an open-source framework that helps to build communication applications and is used by small, midsize and large companies and governments worldwide.