CoSy (Coherent Systems) is an environment, by _(Bob Armstrong) based on _(APL). It's successor is KoSy, based on _(K).

It is somewhat interesting because of its Textual _(User Interface) (_(TUI)) resemblance with _(Oberon), _(The Humane Environment) and other similar systems.

<UL CLASS="links">
  <LI>_("Coherent Systems : CoSy.com" | http://cosy.com/)</LI>
</UL>
