Pandoc and AsciiDoctor are fairly similar in their purpose. Pandoc aims to provide conversion between a bunch of different formats, while AsciiDoctor primarily

Pandoc and AsciiDoctor are fairly similar in their purpose. Pandoc aims to provide conversion between a bunch of different formats, while AsciiDoctor primarily focuses on the AsciiDoc format, a "competitor" for markdown. I prefer AsciiDoc over Markdown because it is just a bit more robust. While both are equally simple to use for the most common use cases of marking up a document and adding bold, italics, headings, and code snippets, AsciiDoc has features to add figure captions, cross references, and other slightly more robust features that I use for a lot of my writing.