We are happy to announce the release of Engine.IO v4, the low-level engine that powers Socket.IO.

We published three minor releases right after 2.0.0, so please be sure to use the latest version!

Open Collective provides a transparent, sustainable, and secure way for people to support and sponsor open source projects. We are joining other great projects (you may have heard about MochaJS, GulpJS or webpack, among lots of other awesome projects) in the quest to ensure the project's sustainability.

Socket.IO 2.0.0 is finally here!

We just published some quick fixes!

We just published two fixes for socket.io-client:

• Building with browserify or webpack is now completely straightforward. No need to exclude/ignore or noParse/externals the ws module.

• Improved the JSONP transport when socket.io-client or engine.io-client are lazily evaluated or the <script> tag that included them gets removed.

We published three minor releases right after 1.4.0 addressing build issues in different environments.

Socket.IO 1.4.0 ship with new features like automatic compression for XHR and WebSockets, lots of bug fixes and significant performance and memory improvements.

Socket.IO 1.3.7 includes support for io.js and Node.JS 4.0.0.

<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/1.3.7/socket.io.min.js"></script>

Socket.IO 1.3.6 addresses a build issue with the ws module on Windows.

<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/1.3.6/socket.io.min.js"></script>