Marker

Marker is a Markdown editor for Linux made with GTK+3. It lets users view and edit Markdown documents in a native desktop application, with conversion paths for HTML, LaTeX, and common document formats.

Markdown conversion uses SciDown for HTML and LaTeX, including YAML headers, document classes, Beamer presentation mode, abstracts, tables of contents, external document inclusion, equations, figures, tables, listings, captions, and internal references. It also supports TeX math rendering with KaTeX or MathJax, Mermaid diagrams, Charter plotting, highlight.js code block highlighting, an integrated sketch editor, custom CSS themes, and custom syntax themes.

Documents export through Pandoc to PDF, RTF, ODT, and DOCX. An integrated sketch editor adds freehand drawings, and the look of both the preview and the editor can be changed with custom CSS themes and custom syntax themes.