CoSy

See http://CoSy.com

CoSy is an APL notebook "IDE" constructed in open to the x86 Reva Forth .

It is now supported via YouTube and GitHub .

While not pure or complete on either the concatenative or APL ends of the spectrum, it is everyday useful and is working towards both purity and completeness as talented individuals dive in.

See http://CoSy.com and the intro YouTubes to get a sense of whether it may have value to you.