BifurcationKit.jl is a package for the numerical bifurcation analysis of large scale problems. It incorporates automatic bifurcation diagrams (of equilibria) routines and efficient tools to study periodic orbits. Most of these tools run on GPU which makes it possible to study challenging problems. Its design allows an easy to interface with many packages such as ApproxFun.jl, DifferentialEquations.jl, FourierFlows.jl,...