Description: DrayTek SIP SoftPhone is a free VoIP softphone for making and receiving calls over the internet. It supports standard SIP protocol and can integrate with IPPBX systems and SIP trunk providers. Basic features include call history, contacts, call transfer, conference calling.
Type: software
Description: Yate is an open-source telephony engine and server for VoIP and legacy telephone infrastructure. It supports multiple protocols and interfaces for building communications solutions.
Type: software
Pricing: Open Source