Harlequin MLWorks, the personal edition of Harlequin's commercial ML implementation. Source code is also available. You must also install the Emacs editor before you can use this. Free software under the terms of the GNU General Public License . It also adopts an object-oriented approach to program design.
Full documentation is provided, including a comprehensive tutorial.
Free software under the terms of the GNU General Public License . Oberon source code is included. Free software under the terms of the GNU General Public License . MIT Scheme 7.5.17, an implementation of Scheme for Windows. Free software under the terms of the GNU General Public License .