List of loaded/imported packages in Julia

Use names, e.g.

julia> using JuMP

julia> using Gurobi

julia> names(Main)
13-element Array{Symbol,1}:
 :Calculus
 :ans
 :JuMP
 :DualNumbers
 :Graphs
 :DataStructures
 :ReverseDiffSparse
 :MathProgSolverInterface
 :Base
 :MathProgBase
 :Core
 :Gurobi
 :Main

using Lazy
children(m::Module) =
  @>> names(m, true) map(x->m.(x)) filter(x->isa(x, Module) && x ≠ m)

children(Main) will then give you a list of modules currently loaded.

---

Edit: I used Lazy.jl here for the thrush macro (@>>), but you can rewrite it without easily enough:

children(m::Module) =
  filter(x->isa(x, Module) && x ≠ m, map(x->m.(x), names(m, true)))

Alternatively you could add && x ≠ Lazy to the filter to avoid including it.

The proposed answers do not work with Julia 1.0 and hence here is a Julia 1.0 version:

filter((x) -> typeof(eval(x)) <:  Module && x ≠ :Main, names(Main,imported=true))