Release history.

Infinite Slope v. 3.0
    Released: March 24, 2014.
    License: freeware.
    Notes: available at the download page.

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Infinite Slope v. 2.1
    Released: August 30, 2013.
    License: freeware.
    Notes: not available anymore.

Infinite Slope v. 2.0
    Released: September 09, 2013.
    License: freeware.
    Notes: not available anymore.

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Infinite Slope v. 1.2 Edu
    Released: February 08, 2013.
    License: freeware.
    Notes: not available anymore.

Infinite Slope v. 1.0 Edu
    Released: May 31, 2012.
    License: freeware. 
    Notes: not available anymore.