We present a family of three Julia packages that together constitute a complete framework to describe and solve rational expectation models in economics. Dolang.jl is an equation parser and compiler that understands how to compile latex-like strings describing systems of equations into efficient Julia functions for evaluating the levels or derivatives of the equations. Dolo.jl leverages Dolang and implements a variety of frontier algorithms for solving a wide class of discrete time, continuous control rational expectations models. Finally, Dyno.jl builds upon Dolang to implement a Julia prototype of the Matlab-based dynare software library used extensively throughout academia and the public sector to approximate the solution to and estimate rational expectations models.
