PGPfone
PGPfone is software for the encrypted transmission of telephone calls over the Internet using the PGP process.
The program was developed by Phil Zimmermann , who is also the inventor and programmer of PGP. It can be viewed as a very early precursor to today's VoIP .
According to the MIT , with whose assistance this program was developed, it has not been further developed since 1997.
“MIT is no longer distributing PGPfone. Given that the software has not been maintained since 1997, we doubt it would run on most modern systems. "
Today the software , i. H. whose source code and documentation can still be obtained from the PGPI.ORG homepage (see web links) .
Contrary to the expectations of MIT, this program can still run under Windows 2000 and Windows XP . In terms of usability and voice quality, it can no longer compete with modern VoIP applications such as Skype .
In March 2006 Zimmermann therefore presented the beta version of a completely new software called Zfone for encrypting VoIP calls.