| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 1 |
| Spec score · Disk Cleanup Software | 8.4 (#5) | 8.3 (#6) |
| Spec score · Disk Space Analyzers | 8.3 (#26) | 8.2 (#34) |
| Application sizes | No | No |
| Exportable reports | Yes | Yes |
| External drive scans | Yes | Yes |
| File-type breakdown | No | No |
| Free plan | Yes | Yes |
| License | The software is distributed under the MIT license, which grants use, modification, and redistribution subject to its stated conditions. | The software is distributed under the MIT license. |
| Desktop platforms | Linux,macOS,Windows | The maker lists Linux static binaries and packages for Linux, BSD, AIX, Solaris, macOS, and other systems, plus a Windows binary from another site. |
| Purpose | Gdu is a fast disk usage analyzer with a console interface, written in Go. | ncdu is a text-mode disk usage analyzer designed to find space hogs, including on remote servers without a graphical setup. |
| Scanning | It is intended primarily for SSDs, where it can fully use parallel processing; HDDs also work. | Version 2.5 added parallel scanning, which is disabled by default and can be enabled with a thread count option. |
| Scan scope | files_folders | files_folders |
| Treemap view | Yes | No |