Amber's quite heavyweight and requires server-side support to do anything useful. But Smalltalk's so simple that writing your own transpiler isn't that hard --

Amber's quite heavyweight and requires server-side support to do anything useful. But Smalltalk's so simple that writing your own transpiler isn't that hard --- I have an entirely browser-side prototype in about 2kloc: https://github.com/davidgiven/stellation/tree/stellation5/client https://github.com/davidgiven/stellation/tree/stellation5/cl... Performance is adequate, but not great. Method lookup is the dominating factor, because you need different code paths based on the type of the receiver (number, string, object...) Of course, writing the libraries is the bulk of the work.