Open Source Messaging & Event Streaming Tools
A curated collection of the best open source systems for handling messages, events, and real-time data streams.
Simple, fast, and secure push notifications for all
Stars
33,702Last commit
4 days agoLicense
Apache-2.0
A lightweight, open-source solution for sending real-time notifications to your devices, with end-to-end encryption and no sign-up required.
Open Source Alternative to:
S3-based serverless Kafka reinvented for cost efficiency
Stars
10,546Last commit
2 days agoLicense
Apache-2.0
AutoMQ is a serverless Kafka alternative built on S3 that offers 10x cost savings, easy scalability, and full Kafka compatibility.
Open Source Alternative to:
Next-gen WebSockets server for real-time apps
Stars
5,633Last commit
1 year agoLicense
AGPL-3.0
Open-source, Pusher-compatible WebSockets server that's simple, fast, and resilient for building real-time applications.
Open Source Alternative to:
Real-time stream processing made simple and affordable
Stars
2,245Last commit
11 days agoLicense
Apache-2.0
Timeplus is a lightweight, powerful, and cost-efficient stream processing platform for real-time analytics, deployed as a single binary.
Open-source message stream built on Postgres
Stars
2,190Last commit
6 months agoLicense
MIT
Sequin offers a feature-rich messaging system with a simple HTTP API, providing RabbitMQ-like functionality without adding complexity to your stack.
Open Source Alternative to:
Fast, scalable analytics infrastructure
Stars
1,662Last commit
5 months agoLicense
MIT
Open source analytics platform built on ClickHouse and Kafka, offering high-speed event tracking and real-time querying capabilities.
Open Source Alternative to:
Open-source webhooks for seamless integrations
Stars
1,481Last commit
17 hours agoLicense
SSPL-1.0
Self-hosted webhook solution for effortless event-driven communication between applications, enhancing system interoperability and automation.
Open Source Alternative to:
Inspect, debug, and replay BullMQ queues visually
Stars
434Last commit
3 months agoLicense
MIT
Desktop app and embeddable dashboard for BullMQ that shows live queue metrics, job runs, FlowProducer graphs, and scheduler status without touching Redis directly.
Open Source Alternative to:
Real-time event tracking and response for tech products
Stars
476Last commit
29 days agoLicense
AGPL-3.0
Track critical events, receive instant notifications, and respond to product activities with customizable webhooks and action buttons
Open Source Alternative to:
Capture – Capture screenshots, generate PDFs, scrape content, extract metadata, and automate browsers with one API.
Openlane