lookr
provided a set of tools for analyzing looking-while-listening eye-tracking experiments performed by the Learning to Talk project (2010–2016).
Helpful references on analyzing looking-while-listening or visual world eyetracking experiments are listed below.
Barr, D. J. (2008). Analyzing "visual world" eyetracking data using multilevel logistic regression. Journal of Memory and Language, 59(4), 457–474. doi:10.1016/j.jml.2007.09.002
Mirman, D. (2014). Growth Curve Analysis and Visualization Using R. Florida, USA: Chapman & Hall/CRC.
Here are some eyetracking references that I've bookmarked or starred over the years.
eyetrackingR
saccades
gazetools
bdots
and
the article describing the method