Oryx opens markdown, source code and plain text files, and reads ebooks (EPUB, FB2, MOBI and AZW3) and comics (CBZ and CBR). A document displays in under 100 ms, even an 8 MB markdown file or a 200 MB book, and memory stays flat however far you scroll. There are no panes, no toolbars and no menus: everything is done from the keyboard, F1 lists the shortcuts and Esc closes whatever is open.
Markdown is rendered the way GitHub shows it, with syntax colors for over a hundred languages and typeset TeX math. Over thirty themes with editable colors apply to reading and to PDF export alike, and the exported PDF reproduces the page as read. Fonts for Latin, Arabic and Hebrew are embedded, and right-to-left books read correctly.
Oryx is a single binary with no browser engine, no runtime and no GPU requirement. It asks for no account and sends no telemetry. The only thing it downloads is the images a markdown file links to. Oryx is also a light editor for markdown and text, and it writes back only the lines that changed.
Yes. Oryx is free and open-source software released under the GPL-3.0-only license.
What is the latest version of Oryx?
The latest version is 1.2.2, released on Oct 21, 2026.
Is it safe to download Oryx?
The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 57eed0bbee161e6c69873dac1509d503aa0acb8097a4ad6ac82547eae224ba5f.
Which Windows versions does Oryx support?
Oryx runs on Windows and is available for 64-bit (x64) systems.
How do I install Oryx silently?
Run the offline installer with msiexec /i "oryx-1.2.2-windows-x86_64.msi" /quiet /norestart, or install it with Windows Package Manager: winget install --id=Steerania.Oryx -e --silent.
How do I uninstall Oryx?
Open Settings › Apps › Installed apps, find Oryx and select Uninstall. From the command line, run winget uninstall --id=Steerania.Oryx -e.
What file types can Oryx open?
Oryx supports 11 file types, including .md, .markdown, .txt, .epub, .fb2, .fbz, .mobi, .azw3 and more.
Alternatives to Oryx
Other E-readers programs for Windows from different developers.
