EU Sovereignty Score
EU sovereignDocument Management (DMS)Headquarters: FR

Voltn: sovereignty score and 8 European alternatives

Voltn, known as NetExplorer until September 2026, is a French cloud platform for sharing and storing files. Voltn Share is used to send, receive and collect files with external parties, with protected links, portals and a log of every action. Voltn Workspace adds storage, co-editing of Word, Excel and PowerPoint formats, approval workflows, electronic signature and version history. Extensions include Sign, Private Cloud, Vault and Watermark, and there are connectors for Google and Microsoft, an API and Zapier. The service is SaaS, on a shared or dedicated cloud.

The provider is NetExplorer SAS, trading as Voltn, with its seat in France. No foreign parent company is named. According to Voltn, customer files are held exclusively in its own data centres in France and Luxembourg. For customer data Voltn acts as a processor, under a separate data processing agreement. The provider states that this is outside the reach of the US CLOUD Act; that is a claim by the provider, which you can have laid down in the contract.

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Sovereignty score
71 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in the EU: European law applies
  • Data residency SOV-3100
    EU-only hosting
  • Cryptographic key sovereignty SOV-360
    Key management with a European vendor
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-655
    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 15, 2026
Headquarters
FR (EU)Verified by hand
Sovereignty model
Vendor-hosted (EU)Verified by hand
Data hosting
EUVerified by hand
Open-source
NoVerified by hand
GDPR-compliant
YesVendor-stated
Category
Document Management (DMS)
Type
Product
Website
voltn.eu ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Voltn

The European alternatives to Voltn come from our knowledge base of over 9,400 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

95 European Document Management (DMS) 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 Voltn

Voltn is headquartered in FR and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data.

Data is hosted exclusively in the EU, so Voltn scores best on data residency.

Voltn 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 Voltn 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 Voltn?

It depends on your use case. Strong EU alternatives to Voltn include 2Charta ECM, ABF iGEKO and AGORA Trust Rooms. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Voltn?

Yes. Open-source EU alternatives to Voltn include agorum, Archifiltre and asalae. These keep your data fully under your own control and let you self-host if you want to.

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

Voltn is headquartered in FR (EU) and hosts data in EU. That makes Voltn an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

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 15, 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

In the changelog

Earlier changes to this page, as listed in the public changelog.

Digital sovereignty in Document Management (DMS)

Document Management (DMS): Document management systems, archiving, workflows and digital records. 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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8 European alternatives to Voltn — GDPR-compliant & EU-hosted · EU Sovereignty Score