IVRESS vs. OpenSpace3D vs. Unlambda vs. jscoverage Comparison Chart

IVRESS is a simulation software product that offers users an integrated virtual reality environment. It's an object-oriented VR toolkit that's designed to enable developers to create immersive interactive worlds. While this might sound like a lofty goal, IVRESS comes with an extensive library of prebuilt objects that can make this a much easier task. Convenient selection and manipulation tools give users the freedom to select any spatial and planar areas they wish. Photorealistic rendering features like texture mapping and transparency make it possible to model fairly realistic scenes. Once you've finished building a VR environment with IVRESS, you can use the spatial navigation control to fly through the scene. This means you'll be able to view models from every side. R&D teams that modeled scenes in older software can import VRML 97 and PLTO3D objects instantly.

Unlambda is a programming language. Nothing remarkable there. The originality of Unlambda is that it stands as the unexpected intersection of two marginal families of languages. Functional programming languages, of which the canonical representative is Scheme (a Lisp dialect). This means that the basic object manipulated by the language (and indeed the only one as far as Unlambda is concerned) is the function. Rather, Unlambda uses a functional approach to programming: the only form of objects it manipulates are functions. Each function takes a function as an argument and returns a function. Apart from a binary “apply” operation, Unlambda provides several built-in functions (the most important ones being the K and S combinators). User-defined functions can be created, but not saved or named, because Unlambda does not have any variables.