.rnw file: how to open it on Windows

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

• 
  RStudio

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

  Open source 2026.10.0+233 705.1K ↓ ★ 5.1K
• 
  Tinn-R

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

  Open source 9.0.5.1 18.4K ↓ ★ 18

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