The GUI of Nimbus Backup, our Windows client for Proxmox Backup Server, joins Salvanza. We designed it on tizbac's code; mjb-is then reworked and substantially extended it; and the three of us are now joining forces under this new product name.
A GUI designed on tizbac's code
The Go backup client by tizbac could already send Windows backups to Proxmox Backup Server from the command line. We designed and built a graphical interface on top of it: the Nimbus Backup GUI, with its Windows service and installer.
In September 2026, tizbac merged this GUI into his own repository. We told that story in our Windows GUI joined tizbac's project.
Timeline
The git history of the gui/ folder, on the nimbusguimerge branch of the Salvanza repository, keeps the record of this work: see the history of the gui/ folder.
- 17 March 2026: first commit of the GUI, by RDEM Systems (
b9dafbf9ae). - 17 March to 12 June 2026: 335 of the 351 commits of the
gui/folder on that branch are signed by RDEM Systems (authorrdem). - 5 September 2026: tizbac merges the GUI into his repository (
8c55a844d7). - 8 November 2026: Salvanza v2.0.0 is released.
These commits were made from a machine address that is not linked to any GitHub account: the repository page therefore does not count them among RDEM Systems' contributions, but git does attribute them.
mjb-is, the repository's main contributor
mjb-is reworked and substantially extended the GUI; he is now the main contributor to the repository. That work has been merged into the shared repository.
Three forces, one name: Salvanza
The three of us decided to join forces under a new product name: Salvanza. tizbac's repository has become Salvanza/salvanza_client, still under the GPL-3.0 license. Salvanza covers Windows and Linux, with the desktop app, the background service and the command line.
Salvanza is an independent community project, compatible with Proxmox Backup Server. It is not a Proxmox product. According to the project README, the client was renamed to follow Proxmox's trademark rules, which keep the Proxmox mark out of product names.
Nimbus Backup, the signed build of Salvanza
We keep our signed binary in our repository, and the published Nimbus Backup releases remain available for download. Over time, Nimbus Backup will be the signed build of Salvanza, distributed under the Nimbus Backup brand. The Salvanza README grants this branding right to every contributor with at least 5 commits adding functionality or fixes.
How to check the signature and hash of a Nimbus Backup binary is still described on the antivirus false positive page.
Copyright and commercial support
The Salvanza README states:
- "© 2024-2026 Salvanza contributors and RDEM Systems";
- RDEM Systems provides commercial support around Nimbus Backup, its branded version.
What does not change for you
Your Windows backups still go to a Proxmox Backup Server, your own or one we host. The installation and configuration guide still applies: back up Windows to Proxmox Backup Server.
Links
- salvanza.org, the project website
- Salvanza/salvanza_client, the GitHub repository
- Nimbus Backup, signed releases
- Our Windows GUI joined tizbac's project
- Nimbus Backup 0.4.1: encryption and signed binaries
Frequently asked questions
Is Nimbus Backup going away?
No. We keep our signed binary in our repository, and the published releases remain available for download. Over time, Nimbus Backup will be the signed build of Salvanza, distributed under the Nimbus Backup brand.
Who develops Salvanza?
Three developers: tizbac, author of the original client; mjb-is, who reworked and substantially extended the GUI and is now its main contributor; and RDEM Systems, which designed the Nimbus Backup GUI. The project stays open to other contributors, under the GPL-3.0 license.
Is Salvanza a Proxmox product?
No. It is an independent community project, compatible with Proxmox Backup Server. According to the project README, the client was renamed to follow Proxmox's trademark rules.
Who provides commercial support?
The Salvanza README states that RDEM Systems provides commercial support around Nimbus Backup, its branded version. It also states: "© 2024-2026 Salvanza contributors and RDEM Systems".
Discover Salvanza
Open source GPL-3.0 · Windows and Linux
A managed PBS for your Windows backups
The client is free. What we sell is the destination: a Proxmox Backup Server hosted in the European Union (in France on request), updated and monitored. From 12 EUR/TB per month.