If you're a Mac user who values keyboard shortcuts for window management, Rectangle is the ideal choice. It's free, lightweight, and eliminates any need for accounts or telemetry, making it great for those who want a straightforward solution that just works. However, if you're looking for advanced layouts, be aware that you might need to invest in the Pro version.
On the other hand, if you’re a Windows user trying to reclaim disk space, WinDirStat is a strong option. Its treemap feature allows you to quickly visualize large files, making it easier to manage your storage. It is also completely free and open source, but keep in mind that it has a dated interface and may be slow to scan extensive drives. If a modern user interface or cross-platform functionality is important to you, then this tool might not meet your needs.