.rmd file: how to open it on Windows

6 Windows apps register the .rmd extension. Install one of them to open the file with a double-click.

About the format

Format

Redcode Metadata (RMD) File

PRONOM identifier

fmt/1039

Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).

• 
  RStudio

  RStudio is an integrated development environment (IDE) for R.

  Open source 2026.10.0+233 705.1K ↓ ★ 5.1K
• 
  Zettlr

  Your one-stop publication workbench

  Open source 4.9.0 37K ↓ ★ 13.8K
• 
  Notion

  A new tool that blends your everyday work apps into one. It's the all-in-one workspace for you and your team.

  Proprietary 7.41.0 461.4K ↓
• 
  Typora

  A markdown editor, markdown reader.

  Proprietary 1.14.15 120.1K ↓
• 
  Tinn-R

  A modern editor/word processor, perfect for R statistical language.

  Open source 9.0.5.1 18.4K ↓ ★ 18
• R
  RKWard

  RKWard is an easy to use and easily extensible IDE/GUI for R.

  Open source 0.8.3

Related guide: Change the default app for a file type in Windows