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Marker

Powerful markdown editor for the GNOME desktop.

  • Completely free
  • Linux
  • Open source

Overview

Marker is a Markdown editor, available on Linux.

Features described in its Flathub listing and in its GitHub repository: Markdown support and syntax highlighting.

File formats mentioned: HTML and YAML.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Powerful markdown editor for the GNOME desktop.” — Flathub, 10 November 2026
  • “Powerful markdown editor for the GNOME desktop.” — Flathub, 10 November 2026
  • “Syntax highlighting for code blocks” — Flathub, 10 November 2026
  • “Exports to PDF, RTF, ODT, DOCx, LaTeX” — Flathub, 10 November 2026

At a glance

All of Marker is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-3.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

  • Open source code
  • Commercial use allowed

About

Features: View and edit markdown documents Convert markdown documents to HTML Tex math rendering Support for mermaid diagrams Support for charter plots Syntax highlighting for code blocks Integrated sketch editor Exports to PDF, RTF, ODT, DOCx, LaTeX Custom CSS themes Custom syntax themes Figure captioning and numbering

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Last technical check: 7 November 2026
  • Description from Flathub — AppStream (Flathub)

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