EU Sovereignty Score
EU sovereignProcurement & Spend ManagementHeadquarters: Switzerland

ProSeller (Concerto): sovereignty score and 8 European alternatives

ProSeller is a Swiss software platform for the ICT channel, from ProSeller AG in Herrliberg. Its Concerto Buy module lets IT resellers compare product prices and stock levels across many distributors, forward orders to the distributor through automatic ordering and file orders by quote, project or purchasing department. Further modules cover a SaaS webshop with automated product-data upkeep, data interfaces, a marketplace view of products and distributors, and marketing services for manufacturers and distributors.

ProSeller AG is based in Switzerland, an EFTA country with an EU adequacy decision, and the site presents the software as Swiss made. No foreign parent company is stated. The vendor does not say where the platform is hosted or whether it can be installed on-premises, and its site shows no data-protection commitment for customer data, so ask for the hosting location and a data processing agreement before use. Price lists, margins and order data are commercially sensitive, which makes these answers relevant.

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Sovereignty score
67 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in Switzerland: Swiss law, recognised by the EU as adequate
  • Data residency SOV-380
    Hosting in Switzerland only (recognised by the EU as adequate)
  • 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 17, 2026
Headquarters
SwitzerlandVerified by hand
Sovereignty model
Vendor-hosted (EU)Verified by hand
Data hosting
SwitzerlandVerified by hand
Open-source
NoVerified by hand
GDPR-compliant
NoVendor-stated
Category
Procurement & Spend Management
Type
Product
Website
proseller.ch ↗

How we verify · Something wrong? Suggest a correction

European alternatives to ProSeller (Concerto)

The European alternatives to ProSeller (Concerto) come from our knowledge base of over 9,900 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

51 European Procurement & Spend Management 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 ProSeller (Concerto)

ProSeller (Concerto) 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.

ProSeller (Concerto) 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.

ProSeller (Concerto) 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 ProSeller (Concerto) 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 ProSeller (Concerto)?

It depends on your use case. Strong EU alternatives to ProSeller (Concerto) include AddVue, Atexo and aumass eVergabe. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to ProSeller (Concerto)?

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

Is ProSeller (Concerto) GDPR-compliant and where is the data hosted?

ProSeller (Concerto) is headquartered in Switzerland (EFTA) and hosts data in Switzerland. That makes ProSeller (Concerto) 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 17, 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 Procurement & Spend Management

Procurement & Spend Management: Sourcing, supplier management, purchase-to-pay and spend management. 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 ProSeller (Concerto) (GDPR)