Authors of GNU tar.

Public domain tar was written by John Gilmore, with contributions from
Henry Spencer, Fred Fish, Ian Darwin, Geoff Collyer, Stan Barber, Guy
Harris, Dave Brower, Richard Todd, Michael Rendell, Stu Heiss, and
Rich Salz.

The FSF version, named GNU tar, was derived from public domain tar by
Jay Fenlason and Joy Kendall.  Amy Gorin and Melissa Weisshaus
contributed to the manual.  GNU tar has been maintained in turn by
Thomas Bushnell BSG, François Pinard, Paul Eggert, and Sergey
Poznyakoff.

Many others have contributed to GNU tar; please see the files THANKS
and ChangeLog.