B1 Archiver
B1 Archiver: A free, multi-platform archiver with broad extraction support and practical archive controls. Ranked #21 of 36 in File Compression Software by our editors (7.7/10); pricing: Free plan; best for free multi-platform archive access.
At a glance
- Editor score7.7 / 10
- PricingFree plan
- Best forFree multi-platform archive access
- Free planYes
- Paid fromFree
- Archive encryptionYes
- Founded2011 · Tallinn, Estonia
- Facts checked20 Sep 2026
Where it wins
- Extracts more than 40 archive formats
- Available on web, Windows, macOS, Linux, and Android
- Supports passwords, split archives, and integrity checking
Where it doesn't
- Archive creation is limited to B1 and ZIP formats
- Integrity checking is specific to B1 archives
- Android features focus on file management and navigation
Our verdict on B1 Archiver
B1 Archiver is a free file-compression and archive-management tool for personal and commercial use. It suits people who need to create, open, and manage archives across desktop, mobile, and web environments without a registration or payment step. The product creates B1 and ZIP archives, extracts more than 40 archive formats, and includes password-protected archive handling, split archives, and multi-volume support. Its platform coverage includes Windows, macOS, Linux, Android, and the web.
The pricing structure is straightforward: the Free plan supports personal and commercial use, with no registration or payment required. That makes B1 Archiver a practical option for individuals, teams, and businesses looking for archive access without a paid tier decision. Its cross-platform coverage also gives it a broad ecosystem fit, particularly for users who move between desktop systems, Android devices, and browser-based workflows. Online archive extraction extends access beyond installed applications, while Android adds file management and navigation capabilities.
Its strongest feature is format access: B1 Archiver can extract more than 40 archive formats while creating B1 and ZIP files, and it supports password-protected and split archives for common sharing and storage needs. Integrity checking is available for B1 archives, adding a focused validation feature. The main trade-off is creation breadth, since the listed creation formats are B1 and ZIP rather than the wider set supported for extraction. Users who primarily need broad archive opening across several platforms should consider B1 Archiver; those who require a larger range of archive formats for creation may prefer a more creation-focused alternative.
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B1 Archiver fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Archive formats | Creates B1 and ZIP; extracts more than 40 archive formats |
| Archive encryption | Yes |
| Split archives | Yes |
| Command-line tools | Not verified |
| Portable version | Not verified |
| Archive repair | Not verified |
| Supported platforms | Windows, Linux, macOS, Android, web |
| Deployment | Cloud, Desktop, Mobile |
| Platforms | Web, Windows, macOS, Linux, Android |
| Pricing | Free plan (source) |
| Website | b1.org |
| Facts checked | 20 Sep 2026 |
Alternatives to B1 Archiver
- 7-ZipA free, open-source archiver with broad formats, encryption, recovery tools, and cross-platform support.9.4
- PeaZipA capable free archive manager for desktop users who need broad format coverage and file utilities.9.2
- PowerArchiverA format-rich archive tool for business workflows, automation, and secure file handling.9.0
See all B1 Archiver alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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