Google Fusion Tables was a web service provided by Google for data management. Fusion tables was used for gathering, visualising and sharing data tables. Data are stored in multiple tables that Internet users can view and download.

The web service provided means for visualizing data with pie charts, bar charts, lineplots, scatterplots, timelines, network graphs, HTML-formatted card-layouts, and geographical maps. Data are exported in a comma-separated values file format. Visualizations could be embedded in other websites, and updated realtime as data in the table changed.

From the Fusion Tables website:

Google Fusion Tables is a service for data management, integration and collaboration.

You can easily upload data sets from CSV, KML and spreadsheets, and visualize the data using a variety of tools. Users can merge data from multiple tables and conduct detailed discussions about the data (on rows, columns and even cells). You can easily visualize large data sets on Google Maps and embed visualizations on other web pages.

Developers can use our API to build applications over Fusion Tables.

Google closed Fusion Tables on 3 December 2019.

Fusion Tables accepted a data file structured as a simple database table, typically a .csv but also other delimiters. It also imported KML, reading each KML placemark or geospatial object into its own row. Fusion Tables files were private, unlisted or public, as specified by the user and followed the convention established by other Google Docs apps. Files were then listed and searchable in the user's Google Drive.