CNMC Master Catalogues is collections of different kinds of data / information together with their metadata from CNMC Programs, projects and line agency, these encompass of geo-spatial (GIS) datasets, satellite imageries, topographic atlas, relational databases, time-series hydro-meteorology data, knowledge base, library catalogues, photos, Multi-media, technical documents/reports, and etc. All these kinds of data/information have been stored and maintained in a database management system on the server storages. The metadata have been made available for online searches either by using Web Portal search engine even any Internet search engines such as Google. From a metadata hit list, users might collect the items he/she wishes to download for the data contents/files, and this has to go through authentication and CNMC license agreement procedures.

The web map services serving as web based mapping tools to support the publication of geospatial information and dataset in the web-based system. The WMS is also help the users to explore interactive thematic map information in various scales, various dataset and provide tools for data and information queries with advance search engines. CNMC manages a range of data and information including time-series data, spatial data and non-spatial data, which supports the CNMC core functions, Line Agency, and other stakeholders. Using Google Maps, the CNMC is developing a series of interactive maps to introduce selected CNMC datasets in a user friendly way.