binscatter.ado is a tool to non-parametrically visualize conditional expectation functions in large datasets. The program also produces regression-discontinuity plots in a computationally efficient manner. For examples of binned scatter plots, see Figure 2 and the discussion in Section 4 in Chetty, Friedman, and Rockoff (2014). Binscatter can be installed directly from the SSC (ssc install binscatter) and a set of examples are also available (help binscatter). binscatter.ado was written by Michael Stepner, with input from Jessica Laird and Laszlo Sandor.