EventCatalog – open-source tool to document event architectures

In plain words

EventCatalog is an open-source tool designed to help developers document event-driven architectures. It provides a structured way to catalog and organize events, services, and their interactions within distributed systems. The tool is aimed at teams building event-driven applications who need to maintain clear documentation of their architecture. EventCatalog enables better visibility into complex event flows and dependencies across microservices.

written from the facts on this page · September 2026

From the sources

EventCatalog connects your domains, systems, services, APIs and events. So every team can see how the organisation works and where their part fits. Give systems, domains, services, events, and flows first-class structure. Attach systems, owners, decisions, and guidance directly to the architecture they describe. The public-facing API for shopping carts. Handles commands to add and remove items and publishes an event when a cart is checked out. The Cart API is the front door to the Cart System. It persists cart contents to the Cart Database , asks the Promotion System to calculate discounts, and publishes Cart Checked Out . Use integrations, generators, and SDKs to build your catalog around…from eventcatalog.dev

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  Light implementation of Event Sourcing using PostgreSQL as event store2023 · github.com · ▲231

  Hi everyone, If you have a Java Spring Boot application with a PostgreSQL database, you can implement Event Sourcing without introducing new specialized databases or frameworks. If you have an application dealing with an entity called Order, you should adopt Event Sourcing to keep track of all changes, and know how the Order got into the current state. Event Sourcing gives you: 1. the true history of the system (audit and traceability), 2. the ability to put the system in any prior state (debugging), 3. the ability to create read projections from events as needed to respond to new demands.…

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  I built an open source event-management system2018 · github.com · ▲175

  This is a Python/Django based event management system. - iyanuashiri/meethub

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  I am building an open-source incident management platform2024 · github.com · ▲168

  I'm building Incidental, an open-source (MIT license) incident management platform. I've been working on it for the past couple of months as a hobby, and now it's at a state where I'm comfortable sharing it. This is also my first open source project. Features: - Custom roles - Custom severities - Integrated with Slack - Web interface Todos: - Custom fields - Custom workflows Website: https://incidental.dev Github: https://github.com/incidentalhq/incidental I'd love to hear your feedback. Thanks!

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  This book explains how to implement DDD, CQRS and Event Sourcing. The concepts are put into practice with standalone examples and a Sample Application.

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