free:
Brian Edmonds

ps:
Branko Lankester <lankeste@fwi.uva.nl>
Michael K. Johnson <johnsonm@redhat.com>
Michael Shields <mjshield@nyx.cs.du.edu>
Charles Blake <cblake@bbn.com>
David Mossberger-Tang
Albert Cahalan <acahalan@cs.uml.edu>

skill/kill/snice:
Albert Cahalan <acahalan@cs.uml.edu>

tload:
Branko Lankester
David Engel <david@ods.com>
Michael K. Johnson <johnsonm@redhat.com>

top:
Branko Lankester <lankeste@fwi.uva.nl>
Roger Binns
Robert Nation <nation@rocket.sanders.lockheed.com>
Michael K. Johnson <johnsonm@redhat.com>
Michael Shields <mjshield@nyx.cs.du.edu>
Tim Janik <timj@gtk.org>
Helmut Geyer <Helmut.Geyer@iwr.uni-heidelberg.de>
George Bonser <george@captech.com>

uptime:
Larry Greenfield <greenfie@gauss.rutgers.edu>
Michael K. Johnson <johnsonm@sunsite.unc.edu>

vmstat:
Henry Ware <al172@yfn.ysu.edu>. 

w:
Larry Greenfield <greenfie@gauss.rutgers.edu>
Michael K. Johnson <johnsonm@redhat.com>
Charles Blake

watch:
Tony Rems <rembo@unisoft.com>
Mike Coleman <mkc@acm.org>