I've been building apps with queues lately and mostly using beanstalkd as my queue because it is very simple, very fast, and, on my platform, it is [apt install beanstalkd] easy to install. I have also been using a handy web interface for beanstalkd which I like so much that I felt I ought to share! It's beanstalk-console, which is a PHP-based web interface to one (or many) beanstalkd servers.
Beanstalkd is a very simple queueing system and I've enjoyed using it from a few different tech stacks. It uses "tubes" rather than channels, supports priorities, and uses a simple string for the body of the "job" on the queue.