Self-hosted / open sourceMusic StreamingHeadquarters: FR

Castopod: sovereignty score and 8 European alternatives

Castopod is an open-source podcast hosting platform for creators who want to publish episodes and stay in touch with their audience. The software can be installed on the organisation's own server, or taken up as a turnkey hosted offer from the publisher. The project is developed by Ad Aures, a company based in Paris, and the code is released under the GNU AGPLv3 licence. The website presents Castopod as a solution for the podcasting 2.0 standard.

Ad Aures SAS is a French company based in Paris, as its legal notice shows. The public pages name no majority shareholder outside France. The website is hosted by OVH in Roubaix, France. The public pages do not say where the publisher's hosted service stores podcast data, so a European organisation choosing that option should have the storage location fixed in its contract. Self-hosting on infrastructure under its own control avoids a third-party host altogether. The site states that its analytics are anonymised and comply with the GDPR.

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

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Sovereignty score

94 / 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-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-6100
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 October 12, 2026

Headquarters	FR (EU)Verified by hand
Sovereignty model	Open-source, distributedVerified by hand
Data hosting	EUVerified by hand
Open-source	YesVerified by hand
GDPR-compliant	YesVendor-stated
Category	Music Streaming
Type	Product
Website	castopod.org ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Castopod

The European alternatives to Castopod come from our knowledge base of over 8,000 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

38 European Music Streaming 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 Castopod

Castopod 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 Castopod scores best on data residency.

Castopod 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 Castopod 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 Castopod?

It depends on your use case. Strong EU alternatives to Castopod include Acast, ARD Sounds and Ausha. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Castopod?

Our list of EU alternatives to Castopod is mostly commercial options. Browse the category on the map for open-source choices.

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

Castopod is headquartered in FR (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes Castopod 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 12, 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 Music Streaming

Music Streaming: Music streaming services — listening, playlists, podcasts. 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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