EU Sovereignty Score
Self-hosted / open sourceCloud PaaSHeadquarters: CH

TrailBase: sovereignty score and 8 European alternatives

TrailBase is an open-source backend for mobile, web and desktop applications, positioned as an alternative to Firebase. In a single executable it provides storage for relational data and files, authentication, an admin interface, type-safe REST and realtime APIs, a WebAssembly runtime for custom server logic and geospatial support. The server is built on Rust and SQLite, with experimental Postgres support. Client libraries exist for JavaScript/TypeScript, Dart, Swift, Kotlin, Go and Python, among others. The README gives its status as alpha.

TrailBase is made by a developer in Switzerland; no legal entity is named. The server is licensed under the Open Software License 3.0 and the client libraries under Apache-2.0. Development was co-funded through the EU's NGI Zero programme, administered by NLnet. You install TrailBase yourself, for example from a binary or a Docker image, so data stays on your own infrastructure. No hosted service from the maintainer was found; an online demo is available.

See the 8 European alternatives ↓Assess your stack with TrailBase pre-selected
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Sovereignty score
94 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in Switzerland: Swiss law, recognised by the EU as adequate
  • Data residency SOV-3100
    Hosting in Switzerland only (recognised by the EU as adequate)
  • 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 16, 2026
Headquarters
CH (EU)Verified by hand
Sovereignty model
Open-source, distributedVerified by hand
Data hosting
CHVerified by hand
Open-source
YesVerified by hand
GDPR-compliant
YesVendor-stated
Category
Cloud PaaS
Type
Product
Website
trailbase.io ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to TrailBase

The European alternatives to TrailBase come from our knowledge base of over 9,500 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

39 European Cloud PaaS 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 TrailBase

TrailBase is headquartered in Switzerland and falls under Swiss law, including the revised Swiss data protection act. Switzerland is not an EU member, but the European Commission recognises its level of data protection as adequate. Its Swiss headquarters does not by itself bring it under US legislation such as the CLOUD Act.

TrailBase hosts data in Switzerland only. Switzerland is not part of the EU or the EEA, so the GDPR does not apply there directly; the European Commission does recognise Swiss data protection as adequate, so personal data can go there without extra safeguards. Our model therefore scores it between EU hosting and hosting outside Europe. If you require strictly EU hosting, take this into account.

TrailBase 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 TrailBase 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 TrailBase?

It depends on your use case. Strong EU alternatives to TrailBase include alwaysdata, amazee.io and Ankra. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to TrailBase?

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

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

TrailBase is headquartered in CH (EFTA) and hosts data in CH. It is also open-source, so you can self-host it. That makes TrailBase 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 16, 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 Cloud PaaS

Cloud PaaS: Platform as a Service — managed runtimes, container orchestration, serverless. 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 TrailBase — GDPR-compliant & EU-hosted · EU Sovereignty Score