Pharo's goal is to deliver a clean, innovative, free open-source Smalltalk-inspired environment. By providing a stable and small core system, excellent dev tools, and maintained releases, Pharo is an attractive platform to build and deploy mission critical Smalltalk applications.
Fancy is a dynamic, object-oriented programming language heavily inspired by Smalltalk, Ruby and Erlang. It supports dynamic code evaluation (as in Ruby & Smalltalk), class-based mixins, (simple) pattern matching, runtime introspection & reflection, "monkey patching" and much more. It runs
... [More] on Rubinius, the Ruby VM, and thus has first-class integration with Ruby's core library and any additional Ruby libraries that run on Rubinius, including most C-extensions. [Less]