NanaZip 7.0 ships with a rolling release model and a deliberate trip back to 7-Zip basics
The latest stable release of the popular open-source 7-Zip fork changes how the project ships updates and quietly pulls back some extended-format options.
NanaZip 7.0, version 2610.1 (build 7.0.1873.0), is available as of now. It's the kind of update that does two opposing things at once: it pushes toward faster, rolling releases while simultaneously stripping features back toward vanilla 7-Zip. The patch is smaller than its implications suggest.
A rolling release, finally
The version string tells the lineage. 2610.1 means the 2026, 10th month, first release of that month, while the build number counts days since the project's first commit on August 31, 2021.
The actual change is simpler than the numbering. Preview and Stable builds now share a single codebase and differ only in build mode. Every stable release gets a matching Preview, though not every Preview eventually becomes stable.
That's a real shift for a project that has always aimed for about one major version a year. Fixes reach users much faster. The tradeoff, though, is that "stable" now carries a touch more of the bleeding edge.
Back to basics
One of the more consequential moves is the rework of "7-Zip ZS," the community fork that bolts Zstandard, Brotli, LZ4, LZ5, and Lizard codecs onto vanilla 7-Zip.
Mouri's reasoning is plain to follow. Keep the core in lockstep with 7-Zip mainline, stop exposing non-standard compression options, and stop chasing sync work that never ends. A new project, NanaZip.ZS.Codecs, now isolates those extra codecs. The unmaintained "Fast LZMA2" encoder is gone, since upstream 7-Zip's own LZMA2 encoder is fast enough.
If you leaned on a few of the more obscure 7-Zip ZS options, some will feel different. The extended format support survives, just reorganized. The Zstandard decoder has been dropped from self-extracting stubs to shrink their footprint.
The net result is a smaller, more conservative build. That's precisely what maintainer Kenji Mouri (known online as MouriNaruto) has been advocating.
The thing most users will actually notice comes first in the notes: NanaZip now runs in Windows Safe Mode. That was blocked for a stretch by Microsoft Store file-system virtualization, and this version simply disables it.
Store redirection gets partly improved as well. It isn't a total fix, Windows 10 still redirects your %UserProfile%\AppData operations, and Windows 11 keeps redirecting anything outside the Local, LocalLow, and Roaming subfolders. Still, the team finally got Microsoft to accept a package with the virtualization fully switched off. That part was the hard one.
A candid roadmap
Here's where the release notes get interesting. They point back to a May 2026 essay by Mouri, "NanaZip Technical Focus," in which he lays out the project's direction with a honesty you rarely see in open source.
NanaZip isn't his full-time work. He has a day job at Tencent, health considerations, and a pile of other projects competing for attention. Some areas, fuzzing, UI polish, he'll leave to the community. Others, like keeping NanaZip close to the 7-Zip ecosystem, he'll drive himself.
He's also planting long-term research like K7FS, a filesystem-style archive format aimed at limited corruption recovery. He's careful to say it's not a near-term commitment and won't replace NanaZip's 7-Zip compatibility direction.
The smaller wins show up too. Italian translations were updated, dark-mode contrast on disabled context-menu items is fixed, and a new CI test suite called K7Tests now checks NanaZip's implementations against sample archives.
Why it still matters
When the 7.0 series first reached the 26.03 baseline, outlets like MakeUseOf and Fix Type covered it, and both landed on the same takeaway: the Windows 11 context menu was the real upgrade. NanaZip drops straight into the new right-click menu, so there's no more "Show more options" detour. Smart Extraction, which bundles loose root files into a fresh folder instead of scattering them across Downloads, drew equal praise.
That context still holds today. NanaZip sits right where Igor Pavlov's decades-old compression engine meets modern Windows shell expectations, and the 7.0 line is about keeping that bridge sustainable.
Where to get it
NanaZip 7.0 ships as an MSIX bundle for offline install, alongside a portable package, debug symbols, and a license file, each with a published SHA-256 checksum. The matching Preview build shares the 7.0.1873.0 number and carries its own set of artifacts.
Head here to the NanaZip repository for the full release notes.
