libconfig

libconfig is a portable and flexible C++ configure file parser which is
the ISO C++ port of KDE KConfig class.
It has almost the same functionality as KConfig in KDE lib.Works fine under both Linux and Win32(msvc, mingw32 or Cygwin).

Today’s small-to-medium-sized (SMB) businesses and large enterprises are saving on their monthly communications costs by making one simple decision: to switch to a VoIP service solution from their old, outdated Plain Old Telephone Service (POTS). By choosing a new VoIP service, these companies enjoy the flexibility, reliability, call features, and audio quality that only a VoIP service can provide. Plus, they cut their phone bill by up to 70%!