Acronyms and Abbreviations Dictionary - http://www.businessballs.com/acronyms.htm Contains terms with origins in the military, medical, technological, and business and training fields.
Cartography Acronyms - http://www.lib.berkeley.edu/EART/abbrev.html Dictionary of terms used in geographic information systems, cartography and remote sensing.
MediLexicon - http://www.medilexicon.com/medicalabbreviations.php Searchable database of pharmaceutical, healthcare and medical abbreviations and acronyms.
ACRO.IT Acronym Directory - http://www.acro.it/ Collection for information technology and related subjects.
Acronym Guide - http://www.acronym-guide.com/ A directory of common acronyms by topic.
Ackr - http://en.hades-presse.com/ackr/ Multilingual dictionary of acronyms with cross-language links.
Health & Safety Acronyms - http://www.edp-uk.com/glossary.htm#Abbreviations Short list used in the field of UK Occupational Health and Safety.
Freeware Hall of Fame - http://www.freewarehof.org/acronyms.html Acronyms and emoticons used in the computer community.
Acronyms and Abbreviations - http://www.chemie.fu-berlin.de/cgi-bin/acronym/ Online translation lookup of English and German.
Svetlozar Online's Abbreviation Glossary - http://www.svetlozar.com/learningcenter/glossaries/ag/ Computer and telecommunications acronyms and their meanings. Searchable and browsable.