The current version is 0.7.0, released 24 April 2013.
x86_64 binary for Mac OS X 10.6 or later
i386 binary for Linux

Older versions

  • Radian 0.6.0 (x86_64 binary for Mac OS X 10.6 or later) 10 October 2012
    Radian 0.6.0 (i386 binary for Linux) 10 October 2012
  • Radian 0.5.0 (x86_64 binary for Mac OS X 10.6 or later) 9 September 2012
  • Radian 0.4.0 (x86_64 binary for Mac OS X 10.6 or later) 25 July 2012
    Radian 0.4.0 (i386 binary for Linux) 25 July 2012
  • Radian 0.3.1 (binary for Mac OS X 10.6 or later) 21 June 2012
  • Radian 0.3.0 (binary for Mac OS X 10.6 or later) 21 June 2012
  • Radian 0.2.0 (binary for Mac OS X 10.6 or later) 20 May 2012
  • Radian 0.1.1 (binary for Mac OS X 10.6 or later) 1 February 2012
  • Radian 0.1.0 (binary for Mac OS X 10.6 or later) 31 January 2012
  • Radian 0.0.0 (binary for Mac OS X 10.6 or later) 30 December 2011

You can also set up a development environment and compile your own binary from source.