ESS has been tested with

  * R >=0.49

  * S-PLUS 3.3-4, 4.5, 5.0-1, 6.0-2, 7.0, 2000

  * S4

  * SAS >=6.12

  * BUGS 0.5, 0.603

  * Stata >=6.0

  * XLispStat >=3.50

on the following platforms

  * Linux (all)

  * Solaris/SunOS (all)

  * Microsoft Windows 95/98/NT/2000/XP (R, SPLUS 4.5/6.0-2/7.0/2000, SAS and BUGS)

  * Apple Mac OS (SAS for OS 9 and R for OS X)

with the following versions of emacs

  * GNU Emacs 20.3-7, 21.1, 21.3-4, 22.0.50-pretesting

  * XEmacs 21.0, 21.1.13-14, 21.4.0-8, 21.4.9-13 (require the files.el patch to revert-buffer for the Local Variables updating problem), 21.4.14-15, 21.4.17, 21.5.18