Description: Asterisk is an open source communications software that allows you to build telephony applications and services. It supports voice over IP, video conferencing, voicemail, auto attendant, interactive voice response, and more. It can be used to build PBX systems, call center solutions, and other communications platforms.
Type: software
Pricing: Open Source
Description: Talkatone is a free voice over IP app and service that allows users to make phone calls, send SMS messages, and more over WiFi or data connections. It provides a free phone number and works on both Android and iOS devices.
Type: software
Pricing: Free