The current 7-Zip is version 26.05, released on 21 October 2026 according to the project's history file. Its entry is short: improved code for unpacking Z archives and Mach-O files, and "some bugs and vulnerabilities were fixed." The 7-Zip home page says the program is free and open source, can be used on any computer including in commercial organisations, and that "you don't need to register or pay for 7-Zip." The newest version was 3 days old on the check date of 24 October 2026.
The home page says most of the code is under the GNU LGPL, some parts use the BSD 3-clause licence, and some parts carry an unRAR licence restriction. It lists support from Windows 11 back to Windows 2000. The download page itself states no Windows requirement and copyright to Igor Pavlov.
Downloads for Windows
| Download | What the page offers |
|---|---|
| 64-bit x64 installer (.exe) | Recommended type |
| 32-bit x86 installer (.exe) | For 32-bit Windows |
| 64-bit ARM64 installer (.exe) | For Windows on Arm |
| MSI installers (x64, x86) | Alternative; the page says to use the exe type instead of msi |
| 7-Zip Extra (.7z) | Standalone console version, 7z DLL and a Far Manager plugin |
| 7zr.exe (x86) | Console executable |
Scope: 7-zip.org/download.html, read 24 Oct 2026. The page says to use the exe type installer instead of the msi version.
Release history and cadence
| Version | Date | Days since the previous |
|---|---|---|
| 26.05 | 21 Oct 2026 | 16 |
| 26.04 | 5 Oct 2026 | 32 |
| 26.03 | 3 Sep 2026 | 70 |
| 26.02 | 25 Jun 2026 | 59 |
| 26.01 | 27 Apr 2026 | Not computed |
Computed from the five dates above: gaps of 59, 70, 32 and 16 days, an average of 44 days. Five releases in six months is a steady pace, though the gaps are uneven.
The history file calls out fixed vulnerabilities in 26.05, and the Z and Mach-O change is the kind of parser work that security fixes usually involve. A copy that is several versions old has missed those, so compare the version in Help, then About, with the number above.
What the home page says it does
| Area | Statement on the page |
|---|---|
| Create and extract | 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM |
| Extract only | Formats such as RAR, ISO, DMG and MSI, among others |
| Compression | High ratio in the 7z format using LZMA and LZMA2 |
| ZIP and GZIP | Claims 2 to 10 percent better compression than PKZip and WinZip |
| Encryption | AES-256 for 7z and ZIP archives |
| Other | Self-extraction for 7z, Windows Shell integration, a Far Manager plugin, localisations for 87 languages |
Scope: 7-zip.org, read 24 Oct 2026. The compression claim is the developer's, with no test conditions on the page. The home page says RAR can only be unpacked, not created, which matters if you need to send RAR files.
What Windows already does
Microsoft's support page on zip files says built-in support in Windows 11 version 24H2 covers "ZIP, RAR, 7z and TAR archive formats," and that 7-Zip compression and decompression are supported. The same page says Windows does not support operations on encrypted archive files and names 7-Zip and WinRAR for those. On a current Windows 11, then, the case for 7-Zip rests on encrypted archives, on creating 7z, XZ or TAR files, and on PCs that are not on 24H2. The full comparison is on the File Compression page.
Before you install: a short check
- Pick x64 unless your PC is 32-bit or Arm. Follow the page's advice and prefer the exe installer.
- Download from 7-zip.org. This directory does not host the file.
- Decide whether you need it at all. If you only open ZIP, RAR or 7z files on Windows 11 24H2, the built-in support may be enough.
- If you need to create RAR files, 7-Zip cannot do it, according to its own page.
What the 7-Zip FAQ answers
| Question | What the FAQ says |
|---|---|
| Commercial use | Free for organisations; no registration or payment |
| RAR5 archives | Version 9.20 supports RAR 2, 3 and 4 only; newer versions also read RAR5 |
| A ZIP file will not open | The FAQ says 99% of such cases are incorrect headers; some archives use unsupported methods such as WavPack |
| Dragging files out into Explorer | Explorer needs files on disk, so 7-Zip extracts to temporary files; the Extract command avoids that |
| Command line wildcard *.* | Reads it as any name with an extension, so files without one are skipped; use * instead |
| Stored paths | Relative paths only, without drive letters |
| Large dictionaries on 32-bit Windows | About 2 GB of virtual space per application, so a big dictionary can fail; 64-bit Windows avoids the limit given enough RAM |
| Solid 7z sorting | After version 15.06 the default order is by name; sorting by type can compress better when the dictionary is smaller than the total file size |
Scope: 7-zip.org/faq.html, read 24 Oct 2026. The FAQ was written for several versions and does not say which entries apply to 26.05.
Most of these entries are about edge cases rather than everyday use, which fits a tool whose home page lists few features beyond formats and encryption. The one that affects a download choice is the 32-bit limit: someone who plans large dictionaries should pick the x64 installer.
Alternatives in this directory
NanaZip is a fork whose release notes say it syncs the 7-Zip mainline. PeaZip is another free, open source archiver with a graphical file manager. WinRAR creates RAR archives and charges after a trial, and Bandizip has a free edition and a paid one. WinDirStat can show which large folders are worth archiving.