| Software | Protocol | Legacy OS Support | Free Version | |----------|----------|------------------|---------------| | MicroSIP | SIP only | Windows XP+ | Yes (open source) | | Linphone | SIP | Windows, macOS, Linux | Yes (open source) | | Jitsi (Desktop classic) | SIP, XMPP | Windows 7+ | Yes | | Telephone (macOS) | SIP | macOS 10.12+ | Yes |
Introduction In the world of Voice over Internet Protocol (VoIP) softphones, few names are as recognizable as Zoiper. Developed by Securax Ltd., Zoiper has been a staple for users needing a lightweight, reliable bridge between their computer and VoIP services like Asterisk, FreeSWITCH, 3CX, or any SIP/IAX2 provider. Among the many iterations released over two decades, Zoiper 3.7 occupies a special place in the software’s history. Released in the early-to-mid 2010s, version 3.7 represents a classic, stable build before the company transitioned to the modern Zoiper 5 and Zoiper 6 interfaces with their cloud-centric features. zoiper 3.7 download
Remember: The best download is a safe download. When in doubt, contact Zoiper support and ask if they can provide a legacy installer directly via email – they may oblige for verified enterprise customers. Disclaimer: This article is for informational purposes only. The author and publisher are not affiliated with Securax Ltd. Always ensure compliance with software licensing agreements and local laws. | Software | Protocol | Legacy OS Support