.nsf file: how to open it on Windows

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

About the format

Format

Lotus Notes Database

MIME type

application/vnd.lotus-notes

PRONOM identifier

x-fmt/336, x-fmt/337, x-fmt/338

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

• 
  QMPlay2

  A video and audio player which can play most formats and codecs.

  Open source 26.08.02 4.6K ↓ ★ 1.2K
• 
  ImPlay

  A Cross-Platform Desktop Media Player

  Open source 1.5.1 ★ 789
• 
  FCEUX

  FCEUX is a Nintendo Entertainment System (NES), Famicom, Famicom Disk System (FDS), and Dendy emulator. It supports NTSC (USA/JPN), PAL (European), and NTSC-PAL Hybrid modes. It supports both Windows and SDL versions for cross compatibility.

  Open source 2.6.6 ★ 1.6K

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