ActivePERL
Activestate open source programming tools for perl python xml xslt scripting with free trials. quality development tools for programmers systems administrators database administrators network administrators and webmasters
http://aspn.activestate.com/aspn/downloads/activeperl/
Aprobe
Improve software performance, track down bottlenecks and memory leaks
http://www.aprobe.com/
IEEE computer org
Ieee pc society
http://www.computer.org/
ISO
ISO
http://www.iso.ch/iso/en/isoonline.openerpage