Currently (julia 1.2) is able to manage virual environments via it's builtin Pkg standard library module:

julia> ] (v1.2) pkg> activate tutorial [ Info: activating new environment at `/tmp/tutorial/Project.toml`. (tutorial) pkg> (tutorial) pkg> status Status `/tmp/tutorial/Project.toml` (empty environment) (tutorial) pkg> add Example ... (tutorial) pkg> status Status `/tmp/tutorial/Project.toml` [7876af07] Example v0.5.1

There is Playground.jl