Processing is a free, open source programming language and development library for the visual arts. It is a software sketchbook, a way to visually learn programming fundamentals, and a tool for creating finished professional work, including mapping networks, textual analysis and producing visualizations. It runs under Windows, OSX and Linux environments, and can export graphics and applets in a variety of formats.

WEAVE (Web-based Analysis and Visualization Environment) is a web-based visualization platform offered by the Institute for Visualization and Perception Research at the University of Massachusetts Lowell. It is designed to visualize any data for any purpose, and to accommodate novice and advanced users alike. It includes the ability to integrate, disseminate and visualize data at nested levels of geography. WEAVE is currently in beta. Both a web-based demo and a download version are available.

Diction is a text analysis program for purchase, designed to determine the tone of a text, and generate reports and statistical analysis from it. DICTION versions are available for Windows® on a PC and Mac®.

NVivo is a commercial software package for creating workspaces and corpuses. Its features include importing YouTube videos and comments, social media posts and discussions, web page and PDF capture, multiple language support and support for a wide variety of data formats such as spreadsheets, images, database tables and so on. Users can query their data in a variety of ways, annotate, cross-link and visualize connections, ideas and findings with charts, maps and models

Quadrigram is an environment for data gathering, query and visualization, based on a visual programming language and intended for users with no experience programming or creating visualizations. At present, it contains 50 different visualizers.

Circos is a free visualization tool for creating publication-quality infographics and illustrations. Its visualizations are arranged in a circle to facilitate exploring relationships between objects and positions, which also has the benefit of offering a high data-to-ink ratio. Though promoted for the sciences, it is highly flexible and can visualize datasets from a wide variety of fields.

VisualEyes is web-based authoring tool for creating dynamic visualizations offered by the University of Virginia. It can be used to combine images, maps, charts, video and research data into a single visualization. It is comprehensively documented, including a reference guide to its XML structure and scripting, and to structuring data for inclusion.

twXplorer is a free, web-based tool for querying Twitter and exploring the search results based on common words, hashtags and commonly shared links. Each search brings up the 500 most recent tweets for that search term, and the tool permits users to save 'snapshots' for later analysis. twXplorer requires users to log in with their Twitter account.

Dataplot is a free software system for data analysis, including characterization, visualization and modelling. It was developed in FORTRAN 77, and has been in continuous development since 1978. Dataplot is well-documented, with numerous tutorials for using and extending it. In addiiton, over 30 graphic types are supported, such as histograms, box plots, scatter plots and normal probability plots. This tool is currently available in Unix, Linux, OS X and Windows versions. Dataplot is open source, but is trademarked rather than licensed.

Project Quincy is a free, open source Django application and MySQL database for tracing the development of social networks and instititions across time and space. Aimed at historians, it enables users to map networks in historical documentation such as biographic, organizational, correspondance or location. Creator Jean Bauer has developed Project Quincy as a single generalizable and extensible database with applications beyond mapping historic connections. All code is available via Github repository, or by contacting the creator directly.