All the below statistical packages are also available on Stata's SSC and can be installed using the "ssc install" command.
randomizr- A Stata package translating the R package randomizr into Stata. The randomizr package streamlines and simplifies random assignment for most experimental designs. (Developed with Alex Coppock [Yale])
manski_ci - A Stata package that uses Manski type bounds (Manski 2003) to calculate confidence intervals around a treatment variable's regression coefficient in a (covariate-adjusted) regression.