Squirrel [0] seems to have been used in a few places [1], but not many compared to Lua. There are also embeddable JavaScript implementations such as Duktape [2]

Squirrel [0] seems to have been used in a few places [1], but not many compared to Lua. There are also embeddable JavaScript implementations such as Duktape [2], and a lightweight Ruby in mruby [3]. [0] http://www.squirrel-lang.org/ http://www.squirrel-lang.org/ [1] https://en.wikipedia.org/wiki/Squirrel_(programming_language)#Applications https://en.wikipedia.org/wiki/Squirrel_(programming_language... [2] https://duktape.org/ https://duktape.org/ [3] https://github.com/mruby/mruby https://github.com/mruby/mruby