Bull Alternatives

An easy way to perform background processing in .NET and .NET Core applications.

RabbitMQ is an open source message broker software.

Sidekiq is a simple, efficient framework for background job processing in Ruby

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

Database based asynchronous priority queue system -- Extracted from Shopify - collectiveidea/delayed_job

Beanstalk is a simple, fast work queue.

Microsoft Azure Service Bus offers cloud messaging service between applications and services.

A REST API to request and schedule callbacks. Manage your one-off scheduled jobs, see detailed reports, and get alerted of failures.

freemium

Simple, Robust Job Scheduling For Your Application

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IBM MQ is messaging middleware that simplifies and accelerates the integration of diverse applications and data across multiple platforms.

A concurrent web server for Ruby.

Apache Kafka is an open-source message broker project developed by the Apache Software Foundation written in Scala.