Soft Phone

Open Source/Freeware

• Zoiper - Branding for your business, Freeware, Support mobile and desktop (Linux/Windows/macOS)
  
• Linphone - Open Source, Support mobile and desktop (Linux/Windows/macOS)
• MicroSIP - Open Source, based on PJSIP for Windows OS
  
• PhonerLite - Freeware, For Windows OS