What are some alternatives?
When comparing PeaZip and The Unarchiver, you can also consider the following products
Bandizip - Bandizip : All-In-One Free Zip Archiver. Bandizip is a lightweight, fast and free All-In-One Zip Archiver.
WinRAR - WinRAR is a powerful archive manager.
File Roller - File Roller is an archive manager for the GNOME desktop environment.
WinZip - The world's best file compressor in the world.
B1 Free Archiver - Free multi-platform universal archiver. Works on Windows, Mac, Android and Linux platforms.
FreeArc - FreeArc is a free and open source file archiver developed by Bulat Ziganshin.