codehist.py Tool to generate visualizations of source code (or any kind of text file) history. Demo: http://codehistdemo.seanyeh.com Dependencies: python3 (python2 might work with minimal/no changes, though I haven't tried it) patch vim (for converting source code -> html) wkhtmltoimage (optional: for converting to image) ffmpeg (optional: for converting to video) Usage: Probably the easiest way to use this is to first generate incremental patch files of the file history using the vim plugin codehist.vim (https://github.com/seanyeh/codehist.vim), assuming you use vim. Run: python codehist.py DIFFS_DIRECTORY OUTPUT_DIRECTORY codehist.py will turn your diffs -> files (an individual file for each history 'version') -> html -> JSON. This JSON file has all the data for each version of the history, and can be used with some html/javascript to produce a simple visualizer. An example of such a visualizer can be found in the examples directory, or see http://codehistdemo.seanyeh.com for a demo visualization of the history of codehist.py :) Currently, the conversion from files -> html is done by vim's TOhtml because I am happy with my current vim color scheme, but using a different syntax highlighting tool such as pygments could probably be done with some minor changes. codehist.py can also generate images of each frame and a video of the history, though the results are not as nice for files with many lines (because the video would have a really large height).