General

• Markdown Guide: free and open-source reference guide for Markdown
• CommonMark: standardised, open-source specification for Markdown
• GitHub Markdown, incl. things like alerts
• MDX: markdown for the component era; blend of MD and JSX

Code

• microsoft/markitdown: Python tool for converting files and office documents to Markdown
• How to reference local files
  • Obsidian opens the file if it can, otherwise it opens in default app
  • Obsidian, Syntax

Same folder: Read more [here](./another_file.xlsx)
Diff folder: Read more [here](../another_folder/another_file.xlsx)

Enhancements

Presentations

• List of markdown presentation tools
• Slidev
• Marp
  • Docs
• Markdown to GSlides

Others

• LaTeX