Juxta is a free, open source tool for comparing and collating texts, originally intended for comparing multiple versions of the same text. It offers several views and visualization options, including histograms and side by side comparison. Juxta is available as both a desktop application and as a web service that can be integrated into the user's own website.

CulturalAnalytics, also known as Cultural Analytics for the Digital Humanities in R, is a free R package of functions for statistical analysis and plotting image properties, developed by Rob Myers specifically for the Digital Humanities, and of value to anyone else with an interest in examining digital or digitized images. It includes statistical functions and can generate histograms, colour clouds, image scatter charts and more.