LyX and KeenWrite are altogether different. My focus for KeenWrite has been twofold: writing a sci-fi novel with a complex timeline wherein I can easily insert variables directly in the document (i.e., partial value followed by control+space) and using it at work for living technical documentation (i.e., R statements for plots, Kroki for diagrams, command-line for CI/CD pipeline integration, and plain TeX for basic math).
LyX, like LaTeX, doesn't force a separation of content from presentation. KeenWrite is focused on Markdown, with PDFs being a transformation of plain text. For more control over the output, KeenWrite adopts pandoc-style annotations. The selected theme can style the annotations as desired.
LyX, like LaTeX, doesn't force a separation of content from presentation. KeenWrite is focused on Markdown, with PDFs being a transformation of plain text. For more control over the output, KeenWrite adopts pandoc-style annotations. The selected theme can style the annotations as desired.