As always I'm happy to see one of my projects getting repped. Huey was something I started out of frustration with celery. It's more of a celery replacement than an rq replacement, though it covers both. If you haven't heard of it -- it does tasks, cron (periodic tasks), delayed tasks, result-storage, etc., and supports multiple worker models (process/thread/greenlet).

Docs: https://huey.readthedocs.io/en/latest/