B1 Archiver

B1 Archiver creates and opens compressed archives on Windows, Linux, macOS, Android, and the web. Its desktop application creates B1 and ZIP files and handles almost 40 archive formats, including RAR, RAR5, and 7z. The online archiver extracts files from B1, ZIP, RAR, 7z, and other archive types. On Android, it also serves as a file manager. B1-format archives support password protection with 256-bit AES encryption, and the desktop software checks archive integrity with Adler-32 before unpacking. The maker says uploaded files are deleted a few minutes after the online page is closed. Its privacy policy says it does not knowingly collect identifying personal data, though it may gather non-personal server details; it also describes possible app and device usage collection for anonymous ad-related purposes in its mobile apps. The free plan costs nothing, requires no registration, and is offered for personal and commercial use. Email support is provided in English.

B1 Archiver covers common archive tasks across several platforms, with a free plan and password protection for B1 archives. Consider its stated privacy details and English-only support when choosing it.

It suits people who need to create or extract archives across desktop, mobile, and web platforms. Android users may also value its file-manager function.

Overview

B1 Archiver is a cross-platform utility for creating and unpacking compressed files, with browser-based extraction for people who do not want to install a desktop app. It is strongest for users who need broad format compatibility without paying; its creation options are narrower than its extraction support.

Desktop versions create B1 and ZIP archives and extract more than 40 formats. The online tool extracts archives, while the Android app also serves as a file manager.

Browse more options in File Compression Software.

Key features

Broad extraction, limited creation

B1 handles formats including B1, ZIP, RAR, RAR5 and 7z, and supports split archives. That range makes it practical for opening files received in different formats, but anyone who needs to create formats beyond B1 and ZIP should look elsewhere. The web archiver adds a way to extract files without installing the desktop software.

Password protection and integrity

B1-format archives support password protection with 256-bit AES encryption. B1 also checks archive integrity with Adler-32 before unpacking. These protections apply to B1 archives and should not be mistaken for a promise that every supported format receives the same encryption options.

Android file management

The Android app combines file management and archiving, which may suit users who want both functions in one app. The privacy policy says Epom Ltd. may collect app and device usage data, including location and network performance, for anonymous ad-related use in B1 apps. That trade-off may deter privacy-conscious users.

Online privacy

The online archiver says uploaded files are deleted a few minutes after the page is closed. The privacy policy says B1 does not knowingly collect identifying personal data, but may collect non-personally identifiable server information such as IP address and browser type. Users handling sensitive files should weigh those statements before uploading.

Pricing

B1 Free Archiver: free. The plan is 100% free for personal and commercial use, requires no registration, and has no free-trial period. It includes creation of B1 and ZIP archives, extraction of more than 40 formats, encryption, and split archives. There are no stated seat or usage quotas to weigh against the free offer. Since the software is already free for commercial use, it is a straightforward fit for individuals and organizations that need its supported formats without a paid tier.

The B1 archive format is described as open source and available for personal and commercial use. Support is by email at [email protected] and is provided in English only, which may be a limitation for users who need help in another language.

Platforms

B1 Archiver supports Windows, Linux, macOS, Android and web. The desktop application handles archive creation and extraction; the web application focuses on extraction. This spread suits users who move between computer, phone and browser, though the web option is not a substitute for desktop archive creation.

Who it's for

B1 suits people who want a free archive utility across several platforms, especially those who mostly extract files and only need to create B1 or ZIP archives. It is less suitable for users who require broader archive creation options, non-English support, or are uncomfortable with the stated data practices of its online and mobile offerings.

Pros and cons

• Pros: Free for personal and commercial use with no registration, plus support for more than 40 extraction formats.
• Pros: B1 archives can use 256-bit AES password protection, and integrity is checked before unpacking.
• Pros: Windows, Linux, macOS, Android and web support provide several ways to access archive functions.
• Cons: Archive creation is limited to B1 and ZIP, despite the broader extraction support.
• Cons: Online uploads are said to be deleted only a few minutes after closing the page, and mobile apps may collect usage and device data for anonymous ad-related use.
• Cons: Email support is available in English only.

Alternatives

• RAR for Android is another free Android option with an ad-supported app and a paid ad-free option; consider it if you want an Android-only alternative.
• ZArchiver is a freemium Android alternative for users focused on that platform.
• StuffIt Expander is free and covers iOS, macOS and Windows, making it an option for users on those platforms.
• Bandizip is a freemium option for macOS and Windows, with a free Standard Edition that includes ads and limited features; consider it if those desktop platforms are your focus.
• PowerArchiver offers a free, non-commercial plan with no expiration for personal use, students and non-profits, plus a paid Business plan at $22.95, paid once; consider it if you need its stated 60+ formats or are comparing a paid business option.
• 7-Zip is free for Linux, macOS and Windows and requires no registration or payment, making it a desktop alternative across those systems.
• Accessibility Test Framework for Android is another free option with Android, Linux, macOS and Windows platforms.
• Keka is a freemium alternative; consider it if you want to compare another option.

Verdict

Choose B1 Archiver if you want a no-cost tool that extracts many archive formats across desktop, Android and web, with password protection for B1 files. Look elsewhere if you need to create formats beyond B1 and ZIP or want different privacy terms, since those are the clearest constraints.