For those that have ever used FractInt, they know it is one of the oldest FREE software programs still being maintained.  And that the various Developers have been making modifications on an irregular basis over the past several years, where they are available at:   http://www.FractInt.org/

Recently, there has been an effort to make it more compatible with the current Windows operating system environment.  And since the beginning of this year, a few Beta versions have been tested out privately.  As of this week, Beta-5 was released for public testing:

      http://www.Nahee.com/Software/FractInt_Setup_21-00_beta-5.msi