About NanaZip
An independent resource dedicated to one of the best modern file archivers for Windows.
NanaZip is a free, open-source file archiver built specifically for Windows 10 and Windows 11. It started as a fork of 7-Zip — widely considered the gold standard in file compression — and added what 7-Zip never had: a modern Windows-native interface, dark mode, MSIX packaging, and proper context menu integration on Windows 11.
If you have ever right-clicked a file in Windows 11 and wished 7-Zip showed up properly in that new context menu, NanaZip is the answer. It does everything 7-Zip can do, plus a handful of things 7-Zip probably never will.
How NanaZip got started
From a Windows modernization side project to 13,000+ GitHub stars.
The fork begins
Kenji Mouri (known online as MouriNaruto), a developer working under the M2Team banner, forked the 7-Zip source code. His goal was straightforward: bring 7-Zip into the Windows 11 era. The first public release arrived later that year, packaged as an MSIX bundle that users could install cleanly from GitHub or the Microsoft Store.
Gaining traction
Word spread through Reddit, Hacker News, and Windows enthusiast forums. NanaZip landed in the Microsoft Store, making installation a one-click affair. The project picked up thousands of GitHub stars as users discovered it solved a real pain point: getting a proper file archiver that fit into Windows 11 without looking like software from 2005.
Extra codecs and modern features
Mouri added compression algorithms that 7-Zip never shipped: Brotli, Zstandard, LZ4, and Fast-LZMA2. He also introduced Smart Extraction, Mica material effects on the title bar, and per-monitor DPI scaling. The project stayed in sync with upstream 7-Zip releases, picking up each improvement within weeks.
Version 6.0 and beyond
NanaZip 6.0 shipped in early 2025, based on 7-Zip 26.00. It added support for reading filesystem images (UFS, ROMFS, ZealFS), .NET single-file bundle extraction, and Electron ASAR archive support. The GitHub repository passed 13,500 stars with 39 contributors.
What NanaZip actually does
File compression and extraction with proper Windows integration.
Full format support
Opens and creates 7z, ZIP, TAR, GZIP, BZIP2, XZ, and WIM archives. Reads dozens more formats including RAR, ISO, CAB, and NSIS installers.
Extra compression codecs
Ships with Brotli, Fast-LZMA2, Lizard, LZ4, and Zstandard on top of everything 7-Zip supports. More algorithms means better compression ratios for specific workloads.
Windows 11 integration
Shows up properly in the Windows 11 right-click context menu. Supports the Mica material effect, dark mode, rounded corners, and modern dialog windows.
Security features
Built with Control Flow Guard and CET Shadow Stack protections. Supports SHA-256, SHA-3, BLAKE2b, BLAKE3, and XXH64 hash verification.
For most people, NanaZip replaces both 7-Zip and WinRAR. It handles every archive format you are likely to encounter, compresses files efficiently, and works with the Windows shell instead of fighting against it.
The developer behind NanaZip
A one-person project with community contributions.
Kenji Mouri (MouriNaruto)
Kenji Mouri is a developer focused on Windows system-level programming. He operates under the M2Team organization on GitHub, where NanaZip is the flagship project. His other work includes NSudo (a privilege escalation tool for Windows) and various Windows SDK contributions.
Mouri maintains NanaZip as an open-source project under the MIT License. The codebase has received contributions from 39 other developers, but the core architecture and most commits come from Mouri himself. He regularly syncs the project with upstream 7-Zip releases, typically within a few weeks of each new 7-Zip version.
Why people use NanaZip
Practical reasons, not marketing ones.
The most common reason people switch to NanaZip from 7-Zip is the Windows 11 context menu. When Microsoft redesigned the right-click menu in Windows 11, 7-Zip stopped appearing in it by default. Users had to click “Show more options” every time they wanted to extract or compress a file. NanaZip fixed that from day one.
Other reasons people mention on Reddit and tech forums:
- MSIX packaging means clean installation and uninstallation, with no leftover registry entries
- Dark mode support across all windows and dialogs
- The Microsoft Store makes updates automatic
- Additional compression codecs (Zstandard in particular) are useful for developers and data engineers
- Smart Extraction that automatically avoids creating redundant nested folders
The project has over 13,500 GitHub stars and is regularly recommended on r/Windows11 and r/software threads about file archivers.
About this website
Independent resource, not an official site.
nanazip.net is a fan-made, independent informational website. We are not affiliated with Kenji Mouri, M2Team, or the official NanaZip project in any way.
We built this site to help users find accurate information about NanaZip, including download links, setup guides, feature explanations, and frequently asked questions. All download links on this site point to official sources (GitHub Releases and the Microsoft Store). We do not host, modify, or redistribute any software files.
We respect the work of Kenji Mouri and the NanaZip contributors. If you find NanaZip useful, we encourage you to star the project on GitHub and support the developer directly.
Get in touch
Questions about this website or its content.
Have a question or found an error? Visit our Contact page.
For official NanaZip support, file an issue on the GitHub repository.