Tableau is a data visualization/business intelligence (BI) software that allows you to drag and drop fields in your data to build interactive visualizations and dashboards.
Voyant is an online text analysis program that gathers together many discrete text analysis functions into one program. It can generate a quantitative summary of a document or a collection of documents, including word count, vocabulary density, and most frequently used words. It can also generate interactive visualizations, such as word clouds, trendlines, and node and link graphs.
RAW is an online visualization tool that allows you to choose from pre-selected visualizations and map aspects of your data to the view. The program focuses on chart types that are more difficult to create with other tools, so line graphs, bar charts, etc. are not available. Limited customization is available with color, size, and sorting, and you can download or embed the vector image you create.
Processing is an open source sketchbook and programming language for coding in a visual arts context. Both are programming languages that require coding.
D3: Data Driven Documents