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Production-grade Rust-native trading engine with deterministic event-driven architecture

Orchestrate everything, everywhere. The open-source control plane for workflows across data, infrastructure, business processes and AI agents. Declarative YAML, event-driven, any language, Git-versioned, scalable to millions of executions.

GenUI for DeepSeek Harness: interactive UI components rendered inline in assistant replies via the dsh-ui fence — layout, charts, plots, forms, quizzes, mermaid, 3D scenes, and an action event loop back to the model. Ships the fence-teaching host plugin, the browser renderer (client half), and the genui skill.

The missing open-source Kubernetes UI with a built-in MCP server for AI agents. See what's broken, why, and what changed. Issues, Topology, event timeline, Helm, GitOps, live service traffic, and cluster audits - all in one Go binary.

Conductor is an event driven agentic workflow engine providing durable and highly resilient execution engine for applications and AI Agents

Apache Kafka - A distributed event streaming platform

Low-code programming for event-driven applications

Dapr is a portable runtime for building distributed applications across cloud and edge, combining event-driven architecture with workflow orchestration.

Netty project - an event-driven asynchronous network application framework

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. It has a robust event-based programming language which provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring, logging and real-time analysis.

Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.

BuildBuddy is an open source Bazel build event viewer, result store, remote cache, and remote build execution platform.

Event streaming platform for agentic AI. Continuously ingest, transform, and serve event streams in real time, at scale.

Event-driven network application framework for high performance protocol servers & clients, non-blocking.

The TypeScript framework for building durable, event-driven actors.

A Fast (and safe) parser for the Windows XML Event Log (EVTX) format

.NET Transactional Document DB and Event Store on PostgreSQL

libxev is a cross-platform, high-performance event loop that provides abstractions for non-blocking IO, timers, events, and more and works on Linux (io_uring or epoll), macOS (kqueue), and Wasm + WASI. Available as both a Zig and C API.

QP/C++ Real-Time Event Framework/RTOS implements event-driven Active Object (Actor) model combined with Hierarchical State Machines. Specifically designed for embedded systems (e.g., ARM Cortex-M MCUs).

Examples of how to do query, style, dom, ajax, event etc like jQuery with plain javascript.

Event based IRC client library in Go (golang)

Full-sized drag & drop event calendar in JavaScript

Event notification library

Event-driven, streaming HTTP client and server implementation for ReactPHP.

Open Source Event Manager. An event management tool tailored to Free and Open Source Software conferences.

jQuery Event Unit Testing Helpers

A discrete event process oriented simulation framework written in Julia. Formerly named SimJulia!

Async, event-driven and UTF-8 aware console input & output (STDIN, STDOUT) for truly interactive CLI applications, built on top of ReactPHP.

An asynchronous event driven PHP socket framework. Supports HTTP, Websocket, SSL and other custom protocols.

Web Based Event Viewer (GUI) for Suricata EVE Events in Elastic Search