Self-hosted / open sourceBrowserHeadquarters: US

Ladybird: sovereignty score and 8 European alternatives

Ladybird is a web browser whose engine is built from scratch. It uses no code from Blink, WebKit or Gecko; it has its own rendering engine (LibWeb) and JavaScript engine (LibJS), plus some third-party libraries for common functions. The project started in 2019 as part of SerenityOS and became standalone in 2022, led by Andreas Kling. It is in active development: according to the project, a first alpha is targeted for 2026, initially for Linux and macOS, with Windows planned later. It is installed as a desktop application.

Ladybird is developed by the Ladybird Browser Initiative, a US 501(c)(3) non-profit based in San Francisco, California, and the source code is published under the BSD 2-Clause licence. The project states that it is funded entirely by donations and sponsorships, with no search deals, data collection or ads. The browser runs locally and is not a hosted service.

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

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Sovereignty score

71 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-210
Headquartered in the US: CLOUD Act and FISA 702
Data residency SOV-3100
EU-only hosting
Cryptographic key sovereignty SOV-390
Self-hostable: encryption keys under your own control
Freedom from lock-in SOV-680
Open source: low switching costs
Source & runtime sovereignty SOV-4 · SOV-675
Source code auditable, forkable and self-hostable

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 July 2, 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	Open-source, distributedVerified by hand
Data hosting	EUVerified by hand
Open-source	YesVerified by hand
GDPR-compliant	YesVendor-stated
Hosting signal	FASTLY - Fastly, Inc., US (US)Technically measured
Category	Browser
Type	Product
Website	ladybird.org ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Ladybird

The European alternatives to Ladybird 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

18 European Browser 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 Ladybird

Ladybird 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.

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

Ladybird is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Ladybird 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 Ladybird?

It depends on your use case. Strong EU alternatives to Ladybird include Ecosia Browser, Falkon and Iridium Browser. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Ladybird?

Yes. Open-source EU alternatives to Ladybird include Falkon, Iridium Browser, Konqueror, LibreWolf, Midori, Mullvad Browser and Nyxt. These keep your data fully under your own control and let you self-host if you want to.

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

Ladybird is headquartered in US and hosts data in EU. 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 July 2, 2026.

Sources

This record was checked via the vendor's website and legal notice during the full audit of June and July 2026. Source links have been recorded per record since 20 September 2026.

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

Cyber Resilience Act

Public signals that relate to the EU Cyber Resilience Act. They do not count towards the score. A missing line means "not found publicly".

Report a vulnerability: github.com/LadybirdBrowser/ladybird/security/policy
Organisation behind the open-source project: Ladybird Browser Initiative

For products in scope of the CRA, CE marking is required from 11 December 2027; this cannot be checked yet.

Checked on October 9, 2026. What is the Cyber Resilience Act?

Digital sovereignty in Browser

Browser: Web browser — browsing, privacy, extensions, 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.

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