| ANSI | American National Standards Institute |
| AP | Application Profile |
| ARIADNE | Alliance of Remote Instructional Authoring & Distribution Networks for Europe |
| COLIS | Collaborative Online Learning and Information Services |
| CP | Content Package |
| CQL | Common Query Language |
| DAM | Digital Assets Management |
| DOI | Digital Object Identifier |
| DRI | Digital Repositories Interoperability |
| DRM | Digital Rights Management |
| EML | Educational Modelling Language |
| GUID | Globally Unique Identifier |
| HEIP | Higher Education Innovation Program |
| IEEE | Institute of Electrical and Electronics Engineers |
| IMS | The IMS Global Learning Consortium. IMS is concerned with ‘standards for learning servers, learning content and the enterprise integration of these capabilities’. The name came originally from ‘Instructional Management Systems’. http://www.imsproject.org/ |
| IIS&R | Interaction of IT Systems and Repositories |
| LCMS | Learning Content Management System |
| LDAP | Lightweight Directory Access Protocol |
| LMS | Learning Management System |
| LO | Learning Object |
| LOX | Learning Object Exchange |
| LOM | IEEE Learning Object Meta-data |
| LOMS | Learning Object Management System |
| LMS | Learning Management System |
| MD | Meta-data |
| NISO | National Information Standards Organization |
| OAI-PMH | Open Archive Initiative Protocol for Metadata Handling |
| ODRL | Open Digital Rights Language |
| OKI | The Open Knowledge Initiative. A collaboration among leading universities and specification and standards organizations to support innovative learning technology in higher education. http://web.mit.edu/oki |
| PAM | Pluggable Authentication Module or Presence & Availability Management |
| REL | Rights Expression Language |
| SCOs | Sharable Content Objects |
| SOAP | Simple Object Access Protocol |
| SCORM | Shareable Content Object Reference Model |
| SRU | Search/Retrieve URL - URL access mechanism |
| SRW | Search/Retrieve Web Service protocol |
| SSO | Single Sign On |
| UDDI | Universal Description, Discovery and Integration |
| XQuery | XML Query |
| XrML | Digital rights expression language by Content Guard |
| W3C | World Wide Web Consortium |
| Z39.50 | A national and international standard (ISO 23950) defining a protocol for computer-to-computer information retrieval. |
