eclipse-ecal/ecal

Health v2 · maintenance only

Adoption not part of the score

1045 stars · 219 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

eCAL is a high-performance, brokerless middleware for interprocess communication on a single machine or across a network, offering publish-subscribe and client-server patterns with automatic transport selection (shared memory, UDP, TCP). It includes tooling for recording, replay, and monitoring of data flows, with C++/C APIs and bindings for Python, C#, and Rust.

Use cases

• send high-throughput sensor data between processes on one machine
• build pub/sub communication between nodes in a robot or vehicle network
• record and replay message streams for autonomous driving development
• replace ROS2 or ZeroMQ with a zero-configuration IPC middleware
• connect C++ and Python components over shared memory
• monitor live data flows across a distributed system

When to choose

• you need very fast local IPC (GB/s) with shared memory transport
• you want brokerless pub/sub with near-zero configuration
• you work in robotics, autonomous driving, or simulation (Matlab Simulink, ROS2 integration)
• you need decentralized recording, replay, and monitoring tooling built in

When to avoid

• you need broker-based messaging with persistent queues or guaranteed delivery
• you only need simple REST or HTTP APIs between services
• your stack is JVM or .NET only without C++/Python integration
• you need a lightweight single-language library rather than a full middleware ecosystem

Facets

library · maturity active

message-queue serialization rpc middleware microservices autonomous-vehicles robotics cpp python cross-platform windows publish-subscribe interprocess-communication shared-memory brokerless client-server protobuf data-recording hdf5 ros2 real-time linux macos

Member repositories

For agents

markdown · JSON · MCP: product_card(name="eclipse-ecal/ecal")