Not having used them myself, I can't comment on the quality of the JVM based Smalltalks: http://www.redline.st/ http://www.redline.st/ https://github.com/hpi-

Not having used them myself, I can't comment on the quality of the JVM based Smalltalks: http://www.redline.st/ http://www.redline.st/ https://github.com/hpi-swa/trufflesqueak https://github.com/hpi-swa/trufflesqueak Another project that I watched without trying myself was for .NET: https://refactory.com/sharp-smalltalk/ https://refactory.com/sharp-smalltalk/ There was also Essence# but it doesn't seem active.