DITA is being deployed worldwide. If your organization uses DITA, please add to this list. (Log in, select the "edit" tab above, and insert your organization in alphabetical order under the appropriate category below.).

See Case studies for detailed descriptions of representative implementations.

Private sector

• Adobe (product support content)
• Algorithmics (manuals, online help)
• Altitude Software (manuals, online help, slides, training guides)
• Arena Solutions (manuals)
• Autodesk (product support content)
• Astoria Software (manuals, online help, tutorials, specifications)
• Avaloq Evolution AG (manuals, online help)
• Avaya (manuals, online help)
• Blondé Communication (Multilingual Marketing & Technical Documentation: manuals, catalogues, online help, websites / Online Publishing Solutions)
• BMC Software (manuals)
• Broadridge's SIS (product support documentation)
• Business Objects (user documentation, web sites)
• CEDROM-SNi (user training materials, reference guides)
• CGI - Calgary (user documentation, software)
• Cmed Technology Ltd (user documentation)
• Comet Communication GmbH (DITA training, DITA tools training)
• Comet Computer GmbH (user documentation, manuals, online help systems, tutorials)
• Compuware Corporation (user documentation)
• Comtech Services (manuals, quick reference, Flash interactive)
• Confiz Solutions (online help documents)
• Data Conversion Laboratory, Inc. (Manuals and User Documentation)
• DITA Storm (a web-based DITA Editor and Wiki)
• DITA Users (DITA training from Authoring to Building)
• DITA Infocenter (arch and lang specs, OT guide, in Eclipse Help)
• EMC (manuals, online help)
• Endeca Technologies (all aspects of product documentation)
• Epicor Software (online help, courses, manuals)
• FamilySearch (API documentation, user guides, etc.)
• Freescale Semiconductor (user documentation for CodeWarrior tools)
• Gambro BCT (manuals, online help, tutorials, specifications)
• GE Multilin (manuals, reference guides, online help)
• HyperWrite (Online help, Web site, papers and articles)
• ICOS Vision Systems (manuals)
• IBM (manuals and information centers)
• Idiom Technologies (manuals, online help, tutorials, specifications)
• InfoPros (manuals, online help)
• Information Builders (documentation)
• Innodata Isogen (manuals, online help, documentation)
• Innovatia (manuals, online help, documentation, training)
• IPLocks, Inc (manuals, online help, documentation)
• Inmedius, Inc. (manuals, online help, DITA-enabled tools)
• JustSystems (manuals and online help for XMetaL, requirements and development documents, marketing datasheets)
• Kongsberg Maritime (manuals, online help, documentation)
• LogMeIn, Inc. (user guides, online help)
• Lombardi Software (PDF+Eclipse+Web Help +wiki outputs, embedded user assistance, training products)
• MaxiScale, Inc. (manuals, online help, wiki, release notes)
• McAfee, Inc. (installation guides, product guides, online help, release notes)
• mental images (manuals)
• MIFMasters (DDT DITA Differencing Tool and DITA Consultancy)
• Moldflow (manuals, online help)
• Nexwave-Solutions (manuals, tutorials)
• NetApp (manuals, online help)
• Nokia (user and development information)
• Oracle (user guides and online help)
• PayPal (developer, administrator, user guides)
• PCI Geomatics (manuals, reference guides, online help)
• Perspectix (product manuals, reference guides, online help)
• Pillar Data Systems (manuals, reference guides, online help)
• Qimonda AG (data sheets, writer's guide, internal specs)
• Really Strategies, Inc. (product manuals, training,etc.)
• Saba Software, Inc. (manuals, online help)
• salesforce.com (Everything - tip sheets, user guides, online help, etc.)
• Scripto (everything: technical and business documentation, web content, knowledge base, training materials...)
• skyBuilders (online training for DITA Users)
• Sophos (online help, manuals, training materials)
• Sterling Commerce (manuals, online help)
• Sybase, Inc. (eclipse user assistance, other product documentation)
• Syclo, LLC (all product and development platform manuals)
• TACTICS Consulting (proposals, Web site)
• TANNER AG (manuals, product catalogs, software)
• Teradata Corporation (manuals, online help, service guides, training)
• Tekelec (manuals, references)
• Trackplus (product manuals, online help)
• Vasont Systems (software manuals)
• Verafin (manuals, online help, training, internal documentation)
• Virtek Vision International Inc. (product manuals, online help)
• VR Communications, Inc. (consulting, prototyping, training, free resources) 
• Webtrends (online help, product documentation)
• XMLdocs.info (DITAinformationcenter and other free DITA resources)

Public sector

• U.S. Financial Accounting Standards Board (FASB) (Codified GAAP standards)

Non-governmental organizations (NGOs)

Universities and Research Centers

• Brigham Young University (printed books and online research repository)