STklos is a free Scheme System conforming to R5RS. The implementation is based on an ad-hoc Virtual Machine. It can also be compiled as a library, so that one can easily embed it in an application. Its features include an efficient and powerful object system based on CLOS, a simple-to-use module system, implementation of the full tower of numbers defined in R5RS, and easy connection to the GTK+ toolkit. STklos is the successor of STk, a Scheme interpreter tightly connected to the Tk toolkit. License: GNU General Public License (GPL) Changes: Support for recent versions of SLIB was fixed. The stklos-pkg command was improved. Several mutexes bugs were fixed. Minor improvements were made to the FFI. PCRE was updated to version 7.4. SRFIs were implemented (SRFI-45, SRFI-59, SRFI-88, SRFI-89). Bugs were fixed.

	Read more at FreshMeat
	www.pheedo.com/click.phdo?i=19cdc4d6f054cc389084cddf74403360