Relight is a library and set of tools to create and view relightable images (RTI).
Publisher’s description
What is RelightLab?
RelightLab by Visual Computing Lab, ISTI - CNR is open-source Windows software in the backup & recovery category. It is written in C++.
Installation and requirements
The publisher provides EXE (NSIS) and Portable installers for 64-bit Windows. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 2026.01, released on February 20, 2026. The version history goes back to December 18, 2025: 2 releases, all linked to the official files.
Popularity and file types
The source code on GitHub (cnr-isti-vclab/relight) has 117 stars. On Windows it registers 1 file type, including .relight. Similar programs include restic, Recuva and Veeam Agent for Microsoft Windows.
Project description on GitHub: “A RTI library for creating and visualizing Reflectance Transformation Imaging”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
Cons
- No native ARM64 build
In short: RelightLab is an open-source backup & recovery tool for 64-bit PCs. Administrators can deploy it unattended.
Is RelightLab safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
776A536EBA91BF682F2E0C2B2D473D0C19ED4296D80043FDF5C6C66983A3F8BE· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 2 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 2026.01Latest | February 20, 2026 | — | 64-bit ZIP64-bit EXE (NSIS) |
| 2025.12 | December 18, 2025 | — | 64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id CNRISTI.RelightLab -eRelightLab2026.01-windows.exe /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- Visual Computing Lab, ISTI - CNR
- Category
- Backup & recovery
- Licence
- GPL-3.0
- Price
- Free
- Source code
- github.com/cnr-isti-vclab/relight
- Written in
- C++
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS), Portable
- Version
- 2026.01
- Released
- February 20, 2026
- Added to the catalogue
- January 14, 2026
- Versions listed
- 2
- GitHub stars
- 117
- GitHub forks
- 26
- Website
- vcg.isti.cnr.it
- winget ID
- CNRISTI.RelightLab
File types it opens (1)
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is RelightLab free?
Yes. RelightLab is open-source software under the GPL-3.0 licence.
Is RelightLab safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install RelightLab with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can RelightLab be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does RelightLab run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of RelightLab?
The versions page lists all 2 versions with links to their official installer files, back to December 18, 2025.
What are alternatives to RelightLab?
restic, Recuva, Veeam Agent for Microsoft Windows, UrBackup Client and TeraCopy. The alternatives page compares them.
