.ruby file: how to open it on Windows

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

• 
  Notepad3

  Notepad like text editor based on the Scintilla source code.

  Free 7.26.602.1 84.4K ↓ ★ 6.7K
• 
  Ox editor

  The simple but flexible text editor

  Open source 0.7.7 ★ 3.7K

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