- Abbreviations and Acronyms of the U.S. Government - Lists federal government abbreviations and acronyms. Includes links to official government web sites.
- AbbreviationZ - Browse acronyms and abbreviations by category.
- ACRO.IT Acronym Directory - Collection for information technology and related subjects.
- Acronym Arsenal - Computer and communication acronyms.
- Acronym Finder - Searchable database covering computers, government, telecommunications, and military situations.
- Acronym Guide - A directory of common acronyms by topic.
- Acronym Master List for LANL - Large list of acronyms, initialisms, abbreviations, and short forms that are used by or useful to Los Alamos National Laboratory.
- Acronym Search - Lookup engine which accepts new entries.
- Acronym Server Simplified - A list of acronyms hosted by University College Cork, gathered from many sources and submitted by users.
- Acronyma - Definitions in multiple languages.
- Acronyms and Abbreviations - Online translation lookup of English and German.
- Acronyms and Abbreviations Dictionary - Contains terms with origins in the military, medical, technological, and business and training fields.
- Acronyms and Initialisms for Health Information Resources - Acronyms for global information and data resources in the health sciences.
- AfkWin Acronyms - Features downloadable browser and filter software. In Dutch and English.
- Altronix Technical Acronyms - A comprehensive list in common usage in the computer, electronics and engineering fields.
- Apronyms - Lists educational and mnemonic acronyms.
- Babel: Computer-related Acronyms - A glossary of computer science and internet acronyms.
- Biomedical Acronym Resolver - Tool for conversion.
- Broadband Acronyms & Definitions - Terms used by service providers and software developers.
- Cartography Acronyms - Dictionary of terms used in geographic information systems, cartography and remote sensing.
- CDIA Center Acronyms and Abbreviations - Carbon Dioxide Information Analysis Center indexed list.
- CRM Acronyms - Frequently used cultural resource management acronyms.
- Dictionary of Initials Acronyms and Abbreviations Used by Counselors - Subdivided by first letter.
- Dictionary of Quaternary Acronyms and Abbreviations - Acronyms and abbreviations that are common in Quaternary studies
- Downloadable Computer Acronyms - Collect of computer and computer-related acronyms in downloadable format.
- eBay Acronyms - Abbreviations one might find in eBay item listings and on community discussion boards. Many of the terms are used at other auction websites as well.
- Explain Acronym Search - Provides a tool for conversion.
- Freeware Hall of Fame - Acronyms and emoticons used in the computer community.
- Frequently Seen Space/Astronomy Acronyms - Terms commonly appearing in space-related newsgroups.
- Glossary and Acronyms for PC and Server Technologies - Glossary of hardware and driver development terms for Windows products.
- Google Glossary - Find definitions for words, phrases and acronyms.
- Hawkman's Automotive Abbreviations - Indexed collection.
- Health & Safety Acronyms - Short list used in the field of UK Occupational Health and Safety.
- High Energy Astrophysics: Common Acronyms - A small, very specialized reference.
- Home of the Network Acronyms - Computer network acronyms in a first-letter-per page format.
- Learning, Performance, and Training Acronyms - Small collection of human resource oriented terms.
- List of US Government Acronyms - A glossary of terms found in US government databases and in print publications.
- MediLexicon - Searchable database of pharmaceutical, healthcare and medical abbreviations and acronyms.
- Oceanic and Atmospheric Acronyms - Specialized collection from the US National Oceanic and Atmospheric Administration.
- Svetlozar Online's Abbreviation Glossary - Computer and telecommunications acronyms and their meanings. Searchable and browsable.
- The Great Abbreviations Hunt - A general guide to three letter terms.
- The Ultimate Computer Acronyms Archive (TUCAA) - Offers a searchable or browsable interface.
- USPS Acronyms and Abbreviations Glossary - United States Postal Service terms and operational numbers.
- USPS Official Abbreviations - Official abbreviations of the United States Postal Service.
- V.E.R.A. - Virtual Entity of Relevant Acronyms - List of computer acronyms, with cross references.
- Veterinary Abbreviations and Acronyms Glossary - Terms commonly used in veterinary practice.
- Wiley InterScience Acronym Finder - Scientific and technical terms, and symbols, with browsing and searching tools.
- WWW Acronym and Abbreviation Server - Allows a search for terms containing a particular word.
