To the best of my knowledge, Hyperopt is limited to random search and Parzen variants. We have more algorithms, and include test functions, deal with noise. On the other hand, in Hyperopt conditional variables are naturally handled, whereas for the moment Nevergrad needs user manual work on this. Both frameworks are asynchronous.

... incidentally Hyperopt has the advantage of considering conditional domains; we might either do the same or combine Nevergrad with Hyperopt...