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.
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.