VoIP providers are companies that offer Voice over Internet Protocol services, allowing users to make phone calls using the internet instead of traditional phone lines. This technology converts voice signals into digital data, enabling communication over the web. VoIP services can be used on various devices, including smartphones, computers, and dedicated VoIP phones. Many VoIP providers offer additional features such as video calling, voicemail, and call forwarding, often at lower costs than traditional phone services. Popular examples of VoIP providers include Skype, Zoom, and RingCentral, which cater to both personal and business communication needs.