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Software · Office & notes

ThiefMD

ThiefMD is a Markdown editor, available on Linux: Markdown support.

  • Completely free
  • Linux
  • Open source

Overview

ThiefMD is a Markdown editor, available on Linux.

Features described in its Flathub listing, in its GitHub repository and on its official website: Markdown support.

File formats mentioned: PDF, EPUB and HTML.

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
  • “The markdown editor worth stealing” — Flathub, 10 November 2026
  • “The markdown editor worth stealing” — Flathub, 10 November 2026

At a glance

ThiefMD is completely free: it is open source software, and every feature is available without paying or subscribing.

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

Keep your Markdown managed. Write epic tales, a novel, that screen play, keep a journal, or finally write that book report. ThiefMD is a Markdown Editor providing an easy way to organize, format, and compile your markdown documents. When you're ready to Publish, go to ePub, PDF, Office, Ghost, WordPress, Write-Freely, or more. Import from and Export to Office, ePUB, HTML, and more. ThiefMD is your one stop shop for making and managing markdown mischief. Working on a screenplay? ThiefMD can handle and combine Fountain files as well. Write your novel and prepare for that movie deal all from the same app.

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Official plan pages (pricing, licence, terms) (commercial use) —
  • 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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