Palladio is an open-source platform that makes it possible to quickly visualize textual data with geographic and temporal dimensions. Like Raw, Palladio accepts tabular data from CSV and other spreadsheet files. After data are ingested, several visualization outputs are available, including maps, graphs, timelines, and galleries. The user has control over basic chart parameters, including data layers and a handful of design options. Visualizations can be exported as vector files. More information about Palladio can be found at http://hdlab.stanford.edu/projects/palladio/
ColorBrewer is an essential online tool for selecting color palettes that are not only aesthetically pleasing but also discernible by individuals with varying types of color blindness. ColorBrewer was originally developed to support color palette selection in designing maps, but it is useful for any visualization that displays quantitative or qualitative data using color.
Voyant is a multifaceted interface designed to simplify and streamline visual analysis of large textual corpora. The user supplies URLs of documents of interest or full texts, and Voyant automatically generates a summary of the corpus (including word frequencies and vocabulary density) as well as an interactive reader that generates basic visualizations and concordance analyses when the user clicks on a given word.
Datawrapper generates quick-and-dirty visualizations of data in four short steps from data upload to publishing. Users have the option to select from a handful of basic chart types, including bar charts, line charts, and pie charts, customize basic chart parameters, and optionally publish or embed the final product after registering a free account.
Textexture makes it easy to convert textual data into interactive network (node-link) diagrams for concordance analysis. Users must register for a free account before being able to upload their own data.
Directories of more data visualization tools and resources
Text Visualization Browser
A gallery of examples of ways to visualize text
DiRT: Digital Research Tools (Visualization)
A directory of various analytics and visualization tools
TAPoR: Text Analysis Portal for Research
A curated list of tools for textual analysis and data visualization
Text and Data Mining Subject Guide
The Northeastern University Libraries subject guide for text and data mining using library resources
A list of favorite tools specifically for data visualization, featuring mainly tools for advanced users