Fast-Backup copies only files that have changed after the first backup. It stores backups as ordinary files and folders instead of using a proprietary archive, supports file history and point-in-time restore, and can run through its graphical interface or command line.
Publisher’s description
What is Fast-Backup?
Fast-Backup by Acclaim Software Ltd is open-source Windows software in the backup & recovery category. It is written in C++.
Installation and requirements
The publisher provides EXE (Inno Setup) installers for 64-bit and 32-bit Windows. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches.
Project description on GitHub: “Fast, free, open-source incremental backup software for Windows that keeps backups as ordinary browsable files.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: Fast-Backup is an open-source backup & recovery tool for 64-bit and 32-bit PCs. Administrators can deploy it unattended.
Is Fast-Backup 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:
8133035384C929C5B78719B11857638894CC6A9FF4281E23BF5E3678DE57995F· 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 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 4.01Latest | August 25, 2026 | — | 32-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
Install from the command line
Silent install ›winget install --id AcclaimSoftware.Fast-Backup -eFast-Backup401_64.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-Related guide: How to use winget: install and update apps
Information
- Publisher
- Acclaim Software Ltd
- Category
- Backup & recovery
- Licence
- MIT
- Price
- Free
- Source code
- github.com/AcclaimSoftwareLtd/Fast-Backup
- Written in
- C++
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, 32-bit
- Installer
- EXE (Inno Setup)
- Version
- 4.01
- Released
- August 25, 2026
- Added to the catalogue
- September 25, 2026
- Versions listed
- 1
- Website
- fast-backup.com
- winget ID
- AcclaimSoftware.Fast-Backup
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Fast-Backup free?
Yes. Fast-Backup is open-source software under the MIT licence.
Is Fast-Backup 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 Fast-Backup 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 Fast-Backup be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Fast-Backup run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit and 32-bit version through emulation.
What are alternatives to Fast-Backup?
restic, UrBackup Client, Veeam Agent for Microsoft Windows, Recuva and Duplicacy Command Line Version. The alternatives page compares them.
