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Immutant is an application server for Clojure. It's an integrated platform built on JBoss AS7 providing support for Ring handlers, asynchronous messaging, caching, scheduled jobs, XA transactions, clustering, daemons and more!

We provide a Leiningen plugin that makes installing and managing an Immutant simple.

Have questions or want to get involved? Come see us in IRC or join our mailing lists.

Install Immutant Read the Tutorials

Latest News

Immutant 1.1.1 Released

Tuesday, April 8, 2014
We're as happy as these twin girls to announce Immutant 1.1.1 - "BlueChicago". This is primarily a bug fix release and, unless any new bugs are reported against it, possibly our last 1.x release.... Read more »

lein-immutant Plugin 1.2.1 Released

Tuesday, April 8, 2014
We just released version 1.2.1 of our Leiningen plugin. This release contains the following changes: Archives that include their dependencies now have deploy-time dependency resolution disabled by default. Archives that include their dependencies now... Read more »

The Deuce - Plans for Immutant 2

Wednesday, April 2, 2014
We haven't blogged about anything in a few months because we've been thinking about how we'd like to improve Immutant. We've come up with a couple of high-level goals: Fully-functional libraries; no container... Read more »

Immutant 1.1.0 Released

Tuesday, February 4, 2014
We're as happy as this penguin to announce Immutant 1.1.0 - "CelloPudding". This is a feature and bug fix release. As always, view our road map here. What is Immutant? Immutant is an application server for Clojure.... Read more »

Releases

Version 1.1.1 was released on Tuesday, April 8, 2014. You can read the announcement or browse the documentation.

Install via:

$ lein immutant install 1.1.1

Don't have the lein-immutant plugin installed? Learn how, or download the zip archive.

Every push to our git repository generates a build on our CI server. You can view the results of those builds on our builds page, and can install the latest successful build via:

$ lein immutant install LATEST

Don't have the lein-immutant plugin installed? Learn how, or download the zip archive.

You can also browse the documentation for the latest incremental build.

Upcoming Talks

12 November, 2013
Herndon, Virginia

Clojure and JBoss with Immutant

Toby Crawley and Jim Crossley will present at DC JBUG Meetup in Herndon, Virginia.

14-16 November, 2013
Alexandria, Virginia
Jim Crossley & Toby Crawley will be hosting an Immutant unsession.

Interested in hosting or giving a talk on Immutant? Get in touch.