MathJax VS Asciidoctor

MathJax - Mathematical Notations expressed using Tex or MathML

Developer tools point to MathJax https://www.mathjax.org/. If you disable javascript you can see some LaTex.

It is something we could add, but it is not planned in the near future. We also have requests for adding math notation (like https://www.mathjax.org/), and that could be a more general solution.

I don't know what Obsidian is, but if it's requiring old TeX math mode toggles (the double dollar sign), then it might not actually be using LaTeX underneath. Many tools that provide LaTeX-style syntax for equations are actually using something like MathJaX, BlahTex, or some custom system by which to translate LaTeX-like syntax into their own equation rendering. This often means you only get a pre-defined subset of what's possible with LaTeX (and the results are never quite faithful to how LaTeX would typeset them).

This will depend heavily on where you're asking the question, e.g. stackexchange has built in mathjax to render it. I'm going to assume you're intending to ask here (because that would make sense), in which case check out the bottom of the sidebar.

From the screenshot, Obsidian looks like a typical Markdown editor that supports some LaTeX math syntax, probably rendered with something like Mathjax. On the other hand, Xournalapp seems to actually use LaTeX, even allowing you to use LaTeX packages like graphicx, tikz, etc.

AsciidocFX, is an open-source, cross-platform editor that provides an exceptional user experience and a comprehensive set of features for working with Asciidoc files. Though Asciidoctor provides these capabilities, not everyone will be comfortable enough to work in the commandline or shell setting that's where AsciidocFX comes to the rescue. Let's explore some of the key capabilities that make AsciidocFX stand out.

You have also AsciiDoctor ( https://asciidoctor.org/ ) which is alive and well. I am using it for technical CS documentation internally, but only for single page documents. I did not try to deploy their whole multi-document setup called Antora ( https://antora.org/ ).

AsciiDoc File support. ( #1876, #808, #2022)

If Maths is important to you, take a look at Asciidoc - https://asciidoctor.org/

I use Asciidoctor, highlightjs, a custom highlight.js language definition and that bash script:

AsciiDoc is so close to being good. It slam dunks Markdown, but they just have a few nagging issues that they refuse to fix, for 9 years now:

https://github.com/asciidoctor/asciidoctor/issues/1087

Asciidoctor is a Ruby-based text processor for parsing AsciiDoc into a document model and converting it to HTML5, PDF, EPUB3, and other formats. Built-in converters for HTML5, DocBook5, and man pages are available in Asciidoctor. Asciidoctor has an out-of-the-box default stylesheet and built-in integrations for MathJax (display beautiful math in your browser), highlight.js, Rouge, and Pygments (syntax highlighting), as well as Font Awesome (for icons). Although Asciidoctor is written in Ruby, that does not mean you need to know Ruby to use it. Asciidoctor can be executed on a JVM using AsciidoctorJ or in any JavaScript environment (including the browser) using Asciidoctor.js. You can choose any one of three Asciidoctor processors (Ruby, JavaScript, Java/JVM) and get the same experience. You can also use the Asciidoctor Maven Plugin to convert your Asciidoc documentation using Asciidoctor from an Apache Maven build.

asciidoctor for writing

If you're looking at AsciiDoc, you'll want to look at Asciidoctor: https://asciidoctor.org/