Dev tools · alternatives · 2026

24 alternatives to Queen MQ

A message queue that turns Postgres into Kafka + RabbitMQ

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.

1. 1
   An SQS Alternative on Postgres▲241

   A lightweight message queue. Like AWS SQS and RSMQ but on Postgres. - pgmq/pgmq

   2024 · github.com · its alternatives →

2. 2
   PgQueuer – Transform PostgreSQL into a Job Queue▲376

   PgQueuer is a Python job queue that uses PostgreSQL for everything — queue storage, locking, notifications. No Redis, no RabbitMQ, no separate broker to operate. If your app already has Postgres, you already have the broker. After ~2 years and 26 minor releases, 1.0 ships today as the first stable release. Strict semver from here on. Thanks to everyone who contributed and left feedback!

   2024 · github.com · its alternatives →

3. 3
   KQ – Simple Job Queue for Python Using Kafka▲116

   Kafka-based Job Queue for Python. Contribute to joowani/kq development by creating an account on GitHub.

   2016 · github.com · its alternatives →

4. 4SA
   StarQueue – a free hosted HTTP message queue with a Postgres back end▲43

   2021 · starqueue.org · its alternatives →

5. 5
   I open-sourced the in-memory PostgreSQL I built at work for E2E tests▲379

   In-memory Postgres for unit/E2E tests. Contribute to hexclave/pgmock development by creating an account on GitHub.

   2024 · github.com · its alternatives →

6. 6
   Hatchet – Open-source distributed task queue▲578

   Hello HN, we're Gabe and Alexander from Hatchet (https://hatchet.run), we're working on an open-source, distributed task queue. It's an alternative to tools like Celery for Python and BullMQ for Node.js, primarily focused on reliability and observability. It uses Postgres for the underlying queue. Why build another managed queue? We wanted to build something with the benefits of full transactional enqueueing - particularly for dependent, DAG-style execution - and felt strongly that Postgres solves for 99.9% of queueing use-cases better than most alternatives (Celery uses Redis or…

   2024 · github.com · its alternatives →

7. 7
   Postgres.js – Fastest Full-Featured PostgreSQL Client for Node and Deno▲257

   Postgres.js - The Fastest full featured PostgreSQL client for Node.js, Deno, Bun and CloudFlare - porsager/postgres

   2022 · github.com · its alternatives →

8. 8
   AutoMQ - A Cost-Effective Kafka Distro That Can Autoscale in Seconds▲58

   Diskless Kafka® on S3. 10x Cost-Effective. No Cross-AZ Traffic Cost. Autoscale in seconds. Single-digit ms latency. Multi-AZ Availability. - AutoMQ/automq

   2024 · github.com · its alternatives →

9. 9
   LavinMQ, an open-source message broker written in Crystal▲16

   Hi HN. I'm Carl, creator of LavinMQ. LavinMQ is an open-source message broker. AMQP 0-9-1, MQTT, HTTP and streaming. Single binary, minimal resource use. If you know RabbitMQ, it's that (but running on a fraction of hardware). We're the team behind CloudAMQP where we've hosted RabbitMQ for 14 years. Sometimes customers hit issues we couldn't fully explain / work around. So we built our own broker, in order to provide solutions where we previously couldn't (which is much easier when you control the full stack). It all started by me building an open-source AMQP proxy to handle short-lived…

   Apr 2026 · github.com · its alternatives →

10. 10
    Cloud-Ready Postgres MCP Server▲167

    Hey HN, I built pg-mcp, a Model Context Protocol (MCP) server for PostgreSQL that provides structured schema inspection and query execution for LLMs and agents. It's multi-tenant and runs over HTTP/SSE (not stdio) Features - Supports multiple database connections from multiple agents - Schema Introspection: Returns table structures, types, indexes and constraints; enriched with descriptions from pg_catalog. (for well documented databases) - Read-Only Queries: Controlled execution of queries via MCP. - EXPLAIN Tool: Helps smart agents optimize queries before execution. - Extension…

    2025 · github.com · its alternatives →

11. 11
    Hydra 1.0 – open-source column-oriented Postgres▲269

    hi hn, hydra ceo here hydra is an open source, column-oriented postgres. you can set up remarkably fast aggregates on your project in minutes to query billions of rows instantly. postgres is great, but aggregates can take minutes to hours to return results on large data sets. long-running analytical queries hog database resources and degrade performance. use hydra to run much faster analytics on postgres without making code changes. data is automatically loaded into columnar format and compressed. connect to hydra with your preferred postgres client (psql, dbeaver, etc). following 4 months…

    2023 · hydra-so.notion.site · its alternatives →

12. 12
    CrimsonQ▲56

    Publish messages to multiple queues

    2022 · its alternatives →

13. 13
    Velvet – Store OpenAI requests in your own DB▲109

    Hey HN! We’re Emma and Chris, founders of Velvet (https://www.usevelvet.com). Velvet proxies OpenAI calls and stores the requests and responses in your PostgreSQL database. That way, you can analyze logs with SQL (instead of a clunky UI). You can also set headers to add caching and metadata (for analysis). Backstory: We started by building some more general AI data tools (like a text-to-SQL editor). We were frustrated by the lack of basic LLM infrastructure, so ended up pivoting to focus on the tooling we wanted. So many existing apps, like Helicone, were hard to use as power…

    2024 · usevelvet.com · its alternatives →

14. 14
    qqqa – A fast, stateless LLM-powered assistant for your shell▲165

    I built qqqa as an open-source project, because I was tired of bouncing between shell, ChatGPT / the browser for rather simple commands. It comes with two binaries: qq and qa. qq means "quick question" - it is read-only, perfect for the commands I always forget. qa means "quick agent" - it is qq's sibling that can run things, but only after showing its plan and getting an approval by the user. It is built entirely around the Unix philosophy of focused tools, stateless by default - pretty much the opposite of what most coding agent are focusing on. Personally I've had the best experience…

    Nov 2025 · github.com · its alternatives →

15. 15
    Bunqueue – Job queue for Bun using SQLite instead of Redis▲39

    ⚡ High-performance job queue for Bun. SQLite by default, PostgreSQL multi-broker when you scale. DLQ, cron, SQLite S3 backups, and native MCP. No Redis. - egeominotti/bunqueue

    Feb 2026 · github.com · its alternatives →

16. 16
    PostgresML▲106

    You know Postgres, now you know machine learning

    2023 · postgresml.org · its alternatives →

17. 17
    Open source, logical multi-master PostgreSQL replication▲151

    Logical multi-master PostgreSQL replication. Contribute to pgEdge/spock development by creating an account on GitHub.

    2025 · github.com · its alternatives →

18. 18
    Hasura GraphQL Engine▲133

    Instant Realtime GraphQL on Postgres

    2018 · hasura.io · its alternatives →

19. 19PD
    PicoMQ – Durable Streams over HTTP, on object storagefree▲159

    PicoMQ is a Rust server for Durable Streams, built on Object Store. Cheap, URL-addressable, granular streams (create/append/read/long-poll/SSE), with Pico Protocol or Durable Streams Protocol as the facade. S3Stream is the stream storage primitive, used in AutoMQ, shipped as a Rust library. Coordination is a command log in Postgres.

    Aug 2026 · picomq.com · its alternatives →

20. 20MU
    Mqutils – Universal Go message queue library▲6

    The Problem Enterprise Go apps typically use multiple message queues: RabbitMQ for reliability, Kafka for streaming, SQS for cloud, NATS for microservices, Redis for caching. Each has different APIs, error handling, and testing strategies. Result: Teams spend months learning 6+ SDKs instead of building features. Migration = complete rewrites. The Solution mqutils provides one unified API for 6 major message queue systems. Same code, different URL: // Switch systems by changing URL only consumer, err := mqutils.NewConsumer("amqp://localhost:5672/orders") consumer, err…

    2025 · mqutils.dev · its alternatives →

21. 21
    Inquery (YC W23) – Real-time events for Postgres▲23

    Hi HN, we're excited to share our open source tool with the community! Inquery is a utility for Postgres that triggers webhooks when rows are inserted, updated, or deleted. It uses database triggers that send low-latency websocket messages to a Go application. This application then calls any configured webhooks with a JSON payload that includes specified values from the database row. Let us know if you have any feedback or questions!

    2023 · github.com · its alternatives →

22. 22
    inQuery▲75

    An open source, free GraphQL monitoring tool for Node.js

    2019 · tableflow.com · its alternatives →

23. 23
    Json2graphql – From a JSON file to Postgres-backed realtime GraphQL▲120

    Blazing fast, instant realtime GraphQL APIs on all your data with fine grained access control, also trigger webhooks on database events. - graphql-engine/community/tools/json2graphql at master · hasura/graphql-engine

    2019 · github.com · its alternatives →

24. 24
    PgJQ: Use Jq in Postgres▲39

    jq extension for Postgres. Contribute to Florents-Tselai/pgJQ development by creating an account on GitHub.

    2024 · github.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →