| About VINE | VINE is a vocabulary Integration Environment Tool, developed at MMI. | | |
| Apollo | Apollo is a user-friendly knowledge modelling application. | | |
| ArcCatalog Metadata Tools | ArcCatalog metadata tool as part of ArcGIS. | | |
| ArcView Metadata Collector | ArcView Metadata Collector (for ArcView 3.x), an easy-to-use application that helps the ArcView 3.x user create Federal Geographic Data Committee (FGDC) compliant metadata. | | |
| Bathymetry Attributed Grid (BAG) | The BAG (Bathymetry Attributed Grid) is a non-proprietary file format for storing and exchanging bathymetric data developed by the Open Navigation Surface Working Group. | | |
| Canadian Heritage Information Network (CHIN) Museum Metadata Standards | CHIN's summary of museum metadata standards and crosswalks | | |
| Canonical Object Browser (COBE) | Java application developed by Scripps Institution of Oceanography for creating metadata definitions and doing metadata crosswalking | | |
| CatMDEdit | Open-source solution to editing XML metadata files in FGDC and/or ISO 19115 format | | |
| Chew 'N Spit Pre-Parser for Metadata | This parser converts metadata records that cannot be parsed by MP (a USGS metadata compiler) into records that can be parsed by MP. | | |
| CIRCO Taxonomy Administrator | Maps designed taxonomies to a built-in general lexical ontology using weighted concept clusters (""gist""). No definable relations. | | |
| Class Ncx Crawler | This is a standalone Java application that extracts metadata information from NetCDF files. | | |
| Cmap Tools | The Institute for Human and Machine Cognition (IHMC) CmapTools program ""empowers users to construct, navigate, share and criticize knowledge models represented as concept maps."" | | |
| COBrA | COBrA is an ontology browser and editor for GO and OBO ontologies. It has been specifically designed to be usable by biologists to create links between ontologies. | | |
| CoGITaNT | Conceptual graph (CG) modeling with rules; nested typed graphs; projections. | | |
| Content Standards Field Comparison Matrix: Introduction | Introduction to a matrix containing a list of fields in each of over 10 key content standards. | | |
| CoRIS Metadata Crosswalk | The relationship between the NOAA FGDC, MARC21, and Dublin Core metadata standards | | |
| DAG-Edit | DAG-Edit has been written to make it easy for programmers to add powerful extensions to DAG-Edit without having to modify the existing DAG-Edit code. | | |
| DAML UML Enhanced Tool (DUET) | DUET provides a UML visualization and authoring environment for DAML. | | |
| DBFMeta | This is a tool to help develop metadata for .dbf files | | |
| Deegree | Deegree is a Java Framework offering the main building blocks for Spatial Data Infrastructures | | |
| DFO Common Data Dictionary | A mapping tool provided by the Canadian Marine Environmental Data Service (MEDS) to facilitate mappings between parameter markup dictionaries in the oceanographic domain. | | |
| Discovery Machine Modeler | Construct strategies in a graphical language | | |
| DL-workbench | Allows management of ontological entities, containers of entities, reasoner connection. | | |
| DOGMAModeler | The DOGMA Project at V.U.B. STAR Lab: linking ontologies, database semantics, information systems, corporate knowledge management, agent technology, internet databases, the semantic web. | | |
| ebXML (Electronic Business using eXtensible Markup Language) | ebXML and related technologies | | |
