Background jobs, queues and workflows

aws.amazon.com

AWS's fully managed message queue with standard and FIFO queues, billed per request with 1 million free requests every month and no minimum fee.

bullmq.io

MIT-licensed Redis job queue for Node.js, Bun, Python, Rust, Elixir and PHP, with delays, cron schedulers, retries, rate limits and parent-child flows.

docs.celeryq.dev

Python's long-established distributed task queue, running tasks on worker processes through RabbitMQ, Redis or SQS brokers, with periodic tasks, rate limits and task chaining.

developers.cloudflare.com

Managed message queue built into Cloudflare Workers, billed per 64 KB operation with no egress charges, and free for 10,000 operations a day since February 2026.

developers.cloudflare.com

Durable multi-step workflows that run on Cloudflare Workers, with retried steps, sleeps up to a year and event waits, billed per step, CPU time and stored state.

dbos.dev

MIT-licensed library that adds durable workflows, queues and scheduled jobs to your app by checkpointing steps in Postgres, with no separate orchestrator to run.

contribsys.com

Standalone job server from the author of Sidekiq that any language can push jobs to and fetch jobs from, with retries and a web UI; AGPL with a paid Enterprise edition.

cloud.google.com

Google Cloud's managed task queue that pushes each task to an HTTP endpoint or App Engine with retries, rate limits and scheduling, with 1 million free operations a month.

worker.graphile.org

MIT-licensed Node.js job queue that uses only PostgreSQL, starting jobs in milliseconds via LISTEN/NOTIFY, with retries, cron and scheduled jobs.

hangfire.io

Background job framework for .NET that runs fire-and-forget, delayed, recurring (cron) and continuation jobs inside your app, stored in SQL Server or Redis, with a built-in dashboard.

hatchet.run

MIT-licensed task queue and durable workflow engine built on Postgres, with a cloud offering 1 million free runs a month and per-run pricing after that.

inngest.com

Event-driven durable functions platform: wrap code in steps and Inngest handles queues, retries, scheduling and flow control, calling your app over HTTPS.

laravel.com

Free MIT package from the Laravel team that manages Redis queue workers from one config file and adds a dashboard for throughput, runtimes, failures and tags.

oban.pro

Apache-licensed job processing for Elixir backed by PostgreSQL, MySQL or SQLite, keeping job history for inspection, with Oban Pro adding durable workflows and global limits.

pgboss.io

MIT-licensed Node.js job queue on PostgreSQL using SKIP LOCKED, with cron, retries, dead-letter queues, priorities, pub/sub fan-out and an optional dashboard.

restate.dev

Low-latency durable execution runtime shipped as one Rust binary with no external database, offering workflows, keyed state, queues and timers, self-hosted or as Restate Cloud.

riverqueue.com

Open-source job queue for Go backed by PostgreSQL or SQLite, with transactional enqueueing, periodic and unique jobs and a web UI; River Pro adds workflows and concurrency limits.

sidekiq.org

Ruby's most widely used background job system: multithreaded workers on Redis, free under LGPL, with paid Pro and Enterprise editions adding batches, cron and rate limits.

github.com

MIT-licensed, database-backed Active Job backend that is the default in new Rails 8 apps, running jobs from MySQL, PostgreSQL or SQLite without Redis.

temporal.io

Managed service for Temporal, the MIT-licensed durable execution engine: workflows written in code survive crashes and deploys, billed per action with no base fee.

trigger.dev

Open-source TypeScript background task platform that runs your tasks on its own managed workers with no timeouts, billed per run plus per second of compute.

upstash.com

HTTP-based message queue and scheduler that delivers messages to your endpoints with retries, delays, cron and dead-letter queue, billed per message.

vercel.com

Durable workflows on Vercel built on the open-source Workflow SDK: mark functions with 'use workflow' and 'use step', billed per state-transition event and data stored.

windmill.dev

AGPLv3 platform that turns scripts in 20+ languages into jobs, cron schedules, workflows and internal apps, with unlimited executions when self-hosted.