Provides a simple task worker, with a task concurrency limit.

LocalBus is a lightweight yet powerful pub/sub system for Ruby applications that enables decoupled communication within a single process. It offers both non-blocking I/O and thread pool processing modes, robust error handling, and fine-grained concurrency controls. Perfect for organizing event-dr...

Fibur is a gem that gives you full concurrency during your I/O calls in Ruby 1.9.

A concurrency library for Ruby inspired by java.util.concurrency and Go (golang). By http://www.appoxy.com

A lightweight, zero-dependency, thread-safe in-process async job queue with configurable concurrency for Ruby applications.

GenevaDrive provides a clean DSL for defining multi-step workflows that execute asynchronously, with strong guarantees around idempotency, concurrency control, and state management.

An ETL (Extract-Transform-Load) library that uses a forking process model for concurrency.

Futuroscope is yet another simple gem that implements the Futures concurrency pattern.

Wraps the net-snmp core usage into idiomatic ruby. It is designed to support as many environments and concurrency frameworks as possible.

Concurrently is a concurrency framework for Ruby and mruby based on fibers. With it code can be evaluated independently in its own execution context similar to a thread: hello = concurrently do wait 0.2 # seconds "hello" end world = concurrently do wait 0.1 # s...

A Redis-backed concurrency management system

Gqtp gem provides both GQTP client, GQTP server and GQTP proxy implementations. They provide asynchronous API. You can use gqtp gem for high concurrency use.

Actors based concurrency library for Ruby.

Retlang is a high performance C# threading library. The library is intended for use in message based concurrency similar to event based actors in Scala. The library does not provide remote messaging capabilities. It is designed specifically for high performance in-memory messaging.

SimpleFuture is class that simplifies coarse-grained concurrency using processes instead of threads. Each instance represents the future result of a block that is passed to it. The block is evaluated in a forked child process and its result is returned to the SimpleFuture ob...

Stages perform_later into a dedicated table, runs a tick loop that admits jobs through declared gates (throttle, concurrency), then forwards survivors to the real ActiveJob adapter. Embedded as a periodic job. Compatible with good_job and solid_queue.

A gem for doing concurrency locks using a TCP port.

Smelt from a plentiferous gallimaufry of requests an agglomerated bale of responses. With, y'know, concurrency and all that.

Some tools to make concurrency in Ruby, like thread pools

A Fiberpool implementation for running tasks cooperatively, allows throttling to max concurrency, best used with event machine and non blocking operations.