Zoiper 2.43 is a legacy version of the popular VoIP (Voice over Internet Protocol) softphone, known for turning your PC into a fully functional telephone. While newer versions exist, version 2.43 remains sought after by users who prefer the classic free edition—specifically its unrestricted access to SIP and IAX protocols without the feature caps found in some later "free" tiers.
Unsupported Software
No updates, bug fixes, or support from Zoiper Ltd. May have known vulnerabilities. Zoiper 2.43 Free Download
To start making calls, you need to link your VoIP provider details: Zoiper 2
next to your account name to confirm you're online and ready to dial. Zoiper 2.43 Free Download