Keka vs The Unarchiver

Choose Keka when you want to create archives as well as extract them. Choose The Unarchiver when your main task is unpacking downloads, including older archive formats. For an ordinary ZIP, try the Mac's built-in tools first. The useful distinction is the job you need to do, rather than a single winner for every archive.

This comparison is published by the Kernir project. It uses the developers' documentation, checked on November 10, 2026; it is not a speed benchmark or a report of a new hands-on Mac test. Kernir's role and current limits are described separately below.

Compare the main jobs

Format support is more specific than the extension alone. Encryption, compression methods and multi-part layouts can affect whether a particular file opens. Check the vendor's detailed list for unusual files rather than treating a row in this table as a promise about every variant.

When to choose Keka

Keka's official site lists both creation and extraction formats. It also documents splitting large output into parts. That makes it a practical option when you regularly package files for other people as well as receive archives.

For example, if you need to send a folder as ZIP today and create a password-protected 7z tomorrow, start with a tool that supports both writing formats and the encryption you need. Make sure the recipient has a compatible reader before choosing the output format; a smaller archive is not helpful if they cannot open it.

Keka is available directly from its developer, with an optional paid App Store version that supports development. The developer says the app is the same, with App Store updates for that version. Check the current store listing for regional pricing rather than relying on a price copied into a comparison article.

When to choose The Unarchiver

The Unarchiver's official format list includes RAR encryption and multiple volumes, as well as older formats such as StuffIt and Compact Pro with stated limitations. The Mac app is free. Its focus is extracting archives, which suits a workflow where someone sends you a file and you need its contents.

For an old backup, identify the exact format before picking a reader. The Unarchiver distinguishes full and partial support; its StuffIt X entry, for example, excludes some methods. If the archive opens, check the extracted documents before discarding the original.

An extraction application is not necessarily a replacement for an archive creator. If you only need to make a plain ZIP occasionally, Finder can handle that separate task, so you may not need a second third-party app.

An Archive Utility alternative?

For a normal ZIP, Apple's built-in workflow is straightforward: double-click to expand, or select files in Finder and choose Compress to create a ZIP. Start there if it completes the task.

Choose an alternative for a concrete requirement: an unsupported input format, different output settings, or an archive browsing workflow. A failed extraction does not by itself prove you need another app. First check for an incomplete download, insufficient space or a password problem in the ZIP troubleshooting guide.

If you need to browse or edit

Listing an archive before extracting, copying one entry and changing the archive's contents are separate operations. Decide which one you need before comparing apps. For a ZIP listing, the built-in command unzip -l "Project.zip" may already be enough; see opening ZIP files on Mac.

Kernir is designed around browsing the archive as a document. On Mac, it can list supported archives through its Quick Look extension, extract selected files, and add or remove entries in writable formats. It reads and writes ZIP, 7z and the supported TAR variants; RAR is read-only. Editing a ZIP explains the workflow and the Terminal alternative.

The Mac download is coming soon. You can view the source and build instructions on GitHub. These steps describe the current app workflow.

Kernir is free and open source and requires macOS 14 or later. It supports ZipCrypto and WinZip-compatible AES ZIPs, and 7z AES-256 including encrypted headers. Encrypted RAR contents and PKWARE Strong Encryption ZIPs are not supported. Choose a reader with documented support when those are your files. Kernir is not the only app to consider for browsing or editing; this article compares the two named extraction tools and explains where our project fits.

Related guides

• Choose ZIP or 7z
• Preview archives with Quick Look
• Extract one file from an archive

Vendor documentation and Kernir source code were checked on November 10, 2026. This is a feature comparison, not a performance benchmark or a new hands-on Mac test.

Current encryption support was rechecked against source code on November 10, 2026. Mobile screenshots, where shown, were supplied by the project owner.