rotor VS eCAL

Compare rotor vs eCAL and see what are their differences.


Event loop friendly C++ actor micro-framework, supervisable (by basiliscos)


eCAL - enhanced Communication Abstraction Layer. A fast publish-subscribe cross-plattform middleware using Shared Memory and UDP. (by continental)
Our great sponsors
  • SonarQube - Static code analysis for 29 languages.
  • Scout APM - Less time debugging, more time building
  • SaaSHub - Software Alternatives and Reviews
rotor eCAL
4 11
212 492
- 5.1%
9.2 9.2
21 days ago 4 days ago
C++ C++
MIT License Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of rotor. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-01-11.


Posts with mentions or reviews of eCAL. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-01-17.
  • eCAL ipc framework
    1 project | | 17 Jan 2022
    New version (5.94) of the high performance interprocess / interhost communication framework eCAL is available. eCAL supports different transport layer like shared memory for interprocess and udp multicast for interhost communication. It does not force the user to use a specific serialization format but supports some of the standards like google protobuf, capnproto or flatbuffers. The API is wrapped to C, C++, Python, C#, Rust and Go (the last two I never tested ;-)). Here you can find all the documentation. Check out the great applications for monitoring, record and replay. eCAL is Apache 2 licensed, repository hosted here. Have fun :-)
  • eCAL 5.9.4 released
    2 projects | | 17 Jan 2022
  • Should I run ROS on windows, through WSL or on linux with dual boot?
    1 project | | 29 Oct 2021
    I you just need a fast publish / subscribe framework for windows you can give eCAL a try. The setup is done in less a minute and their is no dependency hell. Just to mention it as alternative. Documentation here
  • Google Protobuf vs JSON vs [insert candidate here]
    6 projects | | 31 Aug 2021
    I would concider using eCAL since it blasts everything out of the water in terms of performance and comes with some handy tooling for inspection of messages in-travel.
  • eCAL 5.9.0 released
    2 projects | | 10 Aug 2021
    Source on GitHub:
  • Sender and Receiver implementations
    4 projects | | 25 Jul 2021
    Check out eCal.
  • grpc_bench: open-source, objective gRPC benchmark
    6 projects | | 20 Apr 2021
    This really makes me want to try with to see how they compare. I also know that gpc for cpp at least stops functioning by about 4 MB of request size. Which I find stupid. What if I want to send uncompressed bitmaps!
  • Announcing Eclipse iceoryx 1.0.0
    8 projects | | 16 Apr 2021
    Congratulations. Well done. eCAL will update as soon as possible to the new release. The new custom header and the n:m pub/sub support are really welcome new features.
    8 projects | | 16 Apr 2021
    ZeroMQ could also make use of iceoryx as transport layer like eCAL which has an optional iceoryx layer or Eclipse Cyclone DDS, which with the next release will also use iceroryx for local clients when the restrictions on the data types are met .
  • Open source developers that work outside of a full time job, what motivates you?
    3 projects | | 11 Mar 2021
    Have you looked at ? May be interesting.

What are some alternatives?

When comparing rotor and eCAL you can also consider the following projects:

ZeroMQ - ZeroMQ core engine in C++, implements ZMTP/3.1

iceoryx - Eclipse iceoryx™ - true zero-copy inter-process-communication

gRPC - The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)

C++ Actor Framework - An Open Source Implementation of the Actor Model in C++

cyclonedds - Eclipse Cyclone DDS project

nanomsg - nanomsg library

polybar-dwm-module - A dwm module for polybar

sobjectizer - An implementation of Actor, Publish-Subscribe, and CSP models in one rather small C++ framework. With performance, quality, and stability proved by years in the production.

rmw_ecal - ROS2 middleware based on eCAL

Boost.Asio - Asio C++ Library

libuv - Cross-platform asynchronous I/O

rpclib - rpclib is a modern C++ msgpack-RPC server and client library