Unfix is a simple library providing infix and postfix notation in Clojure.

Usage:

(infix [1 + 2] * 3)
;=> 9

(postfix 3 2 1 + *)
;=> [9]

via. Leiningen:

[unfix "1.0"]

via Maven:

<dependency>
  <groupId>unfix</groupId>
  <artifactId>unfix</artifactId>
  <version>1.0</version>
</dependency>

Testing: clj -A:test

More information can be found at the official unfix site