One-click AI smart space adjustment, resizing/moving partitions via a simple slider, and a "preview" mode that queues changes before applying them.

NIUBI Partition Editor stands out for its focus on speed and data security. Top Free Disk Partition Managers to Use in 2026 - Lifewire

For those who want zero "upsell" pressure and 100% open-source power, GParted is the gold standard.