Non-EU vendorPersonal Backup & SyncHeadquarters: US

Duplicacy: sovereignty score and 8 European alternatives

Duplicacy is a cross-platform backup tool that sends files to local disks, SFTP servers and many cloud storage services, including Amazon S3, Backblaze B2, Google Drive and Microsoft Azure. It uses what the vendor calls lock-free deduplication, which manages data chunks without a central database, and it offers client-side encryption. Several computers can back up to the same storage and share deduplicated data. Duplicacy is software you run yourself, either with a browser-based web interface or as a command-line tool, and it is published by Acrosync LLC.

The source code is available on GitHub and may be modified and redistributed, but commercial use requires a paid licence, so it is not open source in the usual sense. The command-line version is free for personal use. Because Duplicacy runs on your own systems and you choose the storage backend, you decide where backups are kept, for example with an EU-based provider or on your own SFTP server. The vendor's website does not state where Acrosync LLC is located.

See the 8 European alternatives ↓Assess your stack with Duplicacy pre-selected

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Sovereignty score

27 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-210
Headquartered in the US: CLOUD Act and FISA 702
Data residency SOV-350
Hosting inside and outside Europe (EU, OTHER)
Cryptographic key sovereignty SOV-320
Key management with a non-European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-615
Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 5, 2026

Headquarters	US (US)Verified by hand
EU adequacy decision	Only for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty model	Vendor-hosted (non-EU)Verified by hand
Data hosting	EU, OTHERVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Category	Personal Backup & Sync
Type	Product
Website	duplicacy.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Duplicacy

The European alternatives to Duplicacy come from our knowledge base of over 6,800 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

19 European Personal Backup & Sync vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Duplicacy

Duplicacy is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

Duplicacy hosts data in EU, OTHER. Exactly what stays within the EU — and what does not — is defined by the vendor's data processing agreement and sub-processor list, not by a setting you control yourself; check those documents for the precise scope, including backups, logs and support access.

Duplicacy is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Duplicacy together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Duplicacy?

It depends on your use case. Strong EU alternatives to Duplicacy include Acronis True Image, Ashampoo Backup and Backup4all. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Duplicacy?

Yes. Open-source EU alternatives to Duplicacy include BorgBackup, Cryptomator and FreeFileSync. These keep your data fully under your own control and let you self-host if you want to.

Is Duplicacy GDPR-compliant and where is the data hosted?

Duplicacy is headquartered in US and hosts data in EU, OTHER. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. For full EU data residency the EU alternatives on this page usually offer more certainty.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 5, 2026.

Sources

Public sources used in the latest check of this record.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Personal Backup & Sync

Personal Backup & Sync: Personal backup tools, file synchronisation and data recovery. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

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