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.
AT&T is a US-based telecoms company, and the second largest provider of mobile services and the largest provider of fixed telephone services in the US.
Verizon VoIP (Voice over Internet Protocol) helps small, medium and large businesses route and manage calls. It includes features like call forwarding, voice mail, monitoring, productivity add-ons, on-hold music and mobile capabilities.
Cisco VPN is the designs, manufactures, and sells internet protocol based networking and other products related to the communications and information technology industry worldwide.