EU Sovereignty Score
Non-EU vendorNotes & TasksHeadquarters: US

Tana Outliner: sovereignty score and 8 European alternatives

Tana Outliner is a knowledge-management and note-taking tool built on an infinite outliner. Users create nodes, link them, and organise them with supertags and views, with AI features for working with their notes. It is offered as a browser version, a standalone desktop application for Mac, Windows and Linux, and mobile apps for iOS and Android, and the desktop app works offline. It is aimed at individuals and teams who want a connected workspace for notes and tasks.

Tana Outliner is made by Tana Labs, Inc., which its privacy policy lists with an address in Palo Alto, California. The company is therefore established in the United States and subject to US law. The privacy policy says personal data may be processed in the United States, Australia and the EEA and stored in cloud services, but it does not name hosting regions or providers, and it refers to a separate sub-processor list. The software is proprietary and not open source, so European organisations that want full control over their notes should review the data terms closely.

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Sovereignty score
17 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-210
    Headquartered in the US: CLOUD Act and FISA 702
  • Data residency SOV-30
    No hosting in Europe (US)
  • 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 11, 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
USVerified by hand
Open-source
NoVerified by hand
GDPR-compliant
YesVendor-stated
Category
Notes & Tasks
Type
Product
Website
outliner.tana.inc ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Tana Outliner

The European alternatives to Tana Outliner come from our knowledge base of over 7,800 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

27 European Notes & Tasks 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 Tana Outliner

Tana Outliner 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.

Tana Outliner hosts data outside the EU (US). Personal data therefore leaves the EU, which requires a transfer mechanism under the GDPR and pulls the data residency score down.

Tana Outliner 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 Tana Outliner 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 Tana Outliner?

It depends on your use case. Strong EU alternatives to Tana Outliner include Amie, Anytype and Bear. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Tana Outliner?

Yes. Open-source EU alternatives to Tana Outliner include Carnet, CryptPad and HedgeDoc. These keep your data fully under your own control and let you self-host if you want to.

Is Tana Outliner GDPR-compliant and where is the data hosted?

Tana Outliner is headquartered in US and hosts data in US. 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 11, 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 Notes & Tasks

Notes & Tasks: Note-taking apps and task management — write, organise, sync. 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.

Also in this category

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8 European alternatives to Tana Outliner — GDPR-compliant & EU-hosted · EU Sovereignty Score