The lack of recursive imports can be annoying, but I found I don't mind it. It keeps your module tree into a DAG. Chronos is probably the most feature rich and

The lack of recursive imports can be annoying, but I found I don't mind it. It keeps your module tree into a DAG. Chronos is probably the most feature rich and uses async. Mummy is newer and uses a threading model. Both are used in production.