.001 file: how to open it on Windows

7 Windows apps register the .001 extension. Install one of them to open the file with a double-click.

About the format

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

7-Zip
A file archiver with a high compression ratio.

Open source 26.05 35.6M ↓ ★ 4.2K
WinRAR
Compress, Encrypt, Package and Backup with only one utility.

Proprietary 7.23.0 11.7M ↓
NanaZip
The 7-Zip derivative intended for the modern Windows experience.

Open source 7.0.1882.0 501.6K ↓ ★ 16K
Bandizip
A powerful archiver that provides an ultrafast processing speed and convenient features.

Proprietary 7.47 79.3K ↓
NanaZip Preview
The 7-Zip derivative intended for the modern Windows experience.

Open source 7.0.1800.0 ★ 16K
360 Zip
Free, security, high-speed compression software

Free 1.0.0.1041
Vovsoft File Splitter And Joiner
Vovsoft File Splitter And Joiner is an easy to use tool to quickly split and combine files. You can split one large file into multiple smaller files. You can also merge the small chunks and create the original large file again.

Proprietary 2.1.0.0