This functionality can be expanded by several community-generated packages, including Markdown-Writer, Markdown-Scroll-Sync, and Markdown-Format. Atom supports Markdown out of the box, with features like syntax highlighting and preview.Kate, the KDE text editor, supports Markdown syntax highlighting.Geany offers the Markdown plugin with preview and syntax highlighting.Gedit includes syntax highlighting for Markdown files.Eclipse has the Markdown Text Editor plugin which includes a document outline, folded sections, preview, export to HTML, task tags, word wrap, and paragraph formatting.Bluefish includes syntax highlighting for Markdown files.

Spacemacs has a Markdown layer to add Markdown support.

GNU Emacs has a Markdown Mode for Emacs package that includes shortcut keys and syntax highlighting.Vim has the vim-markdown and vim-instant-markdown plugins that feature syntax highlighting and folding.You might find that it has native support for Markdown, or that a Markdown extension or plugin is available. You can use your favorite Linux text editor to write Markdown.

Notepad ++ markdown plugin