DDI Alliance Tools portal - The Data Documentation Initiative (DDI) Foundation Tools Program (DDI-FTP), initiated by the DDI Alliance, aims to develop and support the implementation of DDI applications and utilities. The Program consists of a collection of co-ordinated projects whose outputs will be designed to interoperate. Various utilities are available to download from the DDI tools portal, and more will be added.
DeXtris is an open source utility developed by the Open Data Foundation (ODaF), to explore XML statistical metadata. It runs in a standard web browser such as Firefox or Internet Explorer, and can convert between different versions of the DDI.
DDI Metadata Editor, the IHSN Metadata Editor, also known as the Nesstar Publisher, is a feature-rich editor for the preparation of metadata and data for publishing in an online catalog, such as the IHSN-developed National Data Archive (NADA). The metadata produced by the Editor is compliant with the Data Documentation Initiative (DDI) 2.n and the Dublin Core XML metadata standards. The application is developed by Nesstar at the Norwegian Social Science Data Archive (NSD) and is distributed as freeware.
DExT SPSS Reader application, developed as part of the DExT project, converts data and metadata typically stored in proprietary binary formats (SPSS) into a generic format and a DDI record for long-term preservation. It also enables conversion to files for use with various statistical analysis packages (such as MSExcel, SPSS, Stata, SAS) or database management systems.
Online data browsing tools
Nesstar is a software system for data publishing and online analysis. The Nesstar software consists of a set of tools which enable the publication of data and metadata, web-based dissemination and analysis, and data visualisation using maps, graphs and tables.
SDA Project utilities - A number of DDI utilities have been made available by the Survey Documentation and Analysis (SDA) project, based at the University of California at Berkeley.
The Dataverse Network, based at Harvard University, has created the Dataverse Network (DVN), a complete open source data archival system, with multiple features and capabilities.