HangfireIO/Hangfire

BullMQ - Message Queue and Batch processing for NodeJS, Python, .NET, Elixir, Rust and PHP based on Redis or PostgreSQL

Resque is a Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later.

Quartz Enterprise Scheduler .NET

Simple, efficient background processing for Ruby

Simple, reliable, and efficient distributed task queue in Go

Simple job queues for Python

Distributed Task Queue (development branch)

Cloud Native application framework for .NET