Bashforth is a free Forth interpreter, written entirely in the Bash scripting language. It requires GNU Bash v2.04 or higher. Its virtual machine makes use of string threading.
Due to being written in a scripting language, Bashforth runs slowly, but does not need any installation for those who want to try out the Forth language.
An object-oriented programming environment is available for Bashforth, by means of the SmallOOPS extension to Bashforth, allowing interactive OOPS programming right from the Bash prompt.
- ^ Forthfreak.net