Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It can be assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScript.
jQuery is a cross-platform JavaScript library designed to simplify the client-side scripting of HTML. It is free, open-source software using the permissive MIT License. Web analysis indicates that it is the most widely deployed JavaScript library by a large margin.
Zoiper is a cross-platform VoIP softphone dialer that allows voice and video calls, plus instant messaging, to be conducted through multiple Private Branch Exchnage (PBX) networks or favoured Session Initiation Protocol (SIP) providers, with smartphone apps also available for iOS and Android devices.