DiskInternals ZIP Repair vs Untrunc
DiskInternals ZIP Repair
diskinternals.com
Untrunc
untrunc.comSide by side
| Figure | DiskInternals ZIP Repair | Untrunc |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 1 |
| Spec score · File repair tools | 8.0 (#11) | 8.2 (#6) |
| Spec score · File Repair Software | 7.9 (#12) | 7.4 (#29) |
| Platforms | The maker lists Microsoft Windows 95 through XP, Vista, and Windows 7, 8, 10, and 11; its download listing labels version 1.1 as Win. | The site lists Windows binaries and Linux and macOS options through source builds, Docker, Snap, or Homebrew. |
| Purpose | ZIP Repair scans damaged ZIP archives and restores their contents to a new archive. | Untrunc repairs corrupted or truncated MPEG-4 video files by using a healthy reference video to reconstruct missing or damaged index metadata. |
| Support | The maker says its support team welcomes feedback to help make the program better and more powerful. | The site directs users to the anthwlock GitHub Issues page for technical support and says the informational website does not provide software support. |
Plans
In their own words
DiskInternals ZIP Repair
DiskInternals ZIP Repair is a free Windows program that recovers contents from damaged ZIP archives. After an archive is selected, its wizard-based process scans for damage and transfers intact files into a new archive. Built-in extraction handles partially damaged and restored files. DiskInternals says the tool supports all major ZIP capabilities and files of any size. Recovered data can be saved to any disk visible to Windows, including network disks. The program is aimed at cases such as transmission errors or media damage affecting ZIP files. The product page identifies it as freeware and lists a free download. It shows version 1.1, last updated September 17, 2021. Support requests use a ticket system with a unique ticket number and online progress tracking, and a valid email address is required. DiskInternals describes site protections using firewalls and password controls, with customer-information access limited to authorized individuals. No third-party integrations are listed on the reviewed product pages.
Untrunc
Untrunc repairs corrupted or truncated MPEG-4 video files by using a healthy reference clip to rebuild missing or damaged index metadata. It supports MP4, MOV, M4V, and 3GP containers, and leaves raw media data unmodified rather than re-encoding it. The reference must come from the same camera and use the same recording settings as the damaged file. Repairs run offline on local files, with no video uploads or telemetry. There is no file-size limit; streaming mode can handle files larger than available RAM. Windows downloads include a graphical interface and a command-line tool, while other platforms have a command-line workflow. The site describes support for GoPro footage and Sony XAVC, with the anthwlock fork adding compatibility and performance improvements. Optional stretch mode can adjust audio duration to match recovered video. Untrunc is free for personal and commercial use under GPL-2.0. It cannot repair empty files, corrupted raw video data, or non-MPEG-4 containers such as AVI and MKV.