The basic aim of Xenops is to be able to view properly typeset math blocks, tables, and TikZ diagrams without having to constantly recompile the document and view the PDF. Such content is rendered automatically, and asynchronously (using emacs-aio), as the cursor moves in and out of the content blocks.
So it's a replacement for the preview-latex functionality in auctex (but other than that, it is intended to be used with auctex). It's intended to be used with plain .tex files, but you can also use it in org-mode.
There are several other features aimed at making working on math-heavy documents pleasant and you can also execute Sympy and Mathematica code to produce symbolic results as LaTeX-typeset images.
So it's a replacement for the preview-latex functionality in auctex (but other than that, it is intended to be used with auctex). It's intended to be used with plain .tex files, but you can also use it in org-mode.
There are several other features aimed at making working on math-heavy documents pleasant and you can also execute Sympy and Mathematica code to produce symbolic results as LaTeX-typeset images.
A video demo of Xenops is here: https://www.youtube.com/watch?v=GNS-ZFVaFM4