Zoiper 2.43, being an older build, is incredibly lightweight. It runs comfortably on older hardware that struggles with modern operating systems. If you are setting up a call center on a budget using refurbished machines, or if you are running a thin client, this version is a lifesaver. It sits quietly in the system tray and uses negligible CPU power when idle.
To start making calls, you need to link your VoIP provider details: Zoiper 2.43 Free Download