Compression tools do two jobs: they shrink files so they take up less space, and they bundle many files into a single archive that is easier to move or email. Windows and macOS both open ZIP archives on their own, so the reason to install a dedicated archiver is almost always something else — RAR support, stronger encryption, split archives, or a faster multi-core compressor.
The format matters more than the app. ZIP is the universal choice when the person on the other end may be using anything. 7Z usually produces the smallest result and supports AES-256 encryption, but the recipient needs a 7Z-capable tool. RAR is a proprietary format: many tools can extract it, and only WinRAR and RARLAB tools can create it.
This hub covers the archivers we document in detail, the trade-offs between them, and the step-by-step guides that solve the specific problems people actually search for — opening a 7Z file on Windows 11, extracting RAR on a Mac, or splitting an archive that is too large to upload.