Comparisons
In 2026, there is no European suite that reproduces Microsoft 365 in full. There are relevant tools for specific needs: email, files, online editing, CRM, telephony, qualified infrastructure. This guide sets out the criteria, then the use case for each player, with what to check before signing and the main limitation of each. Klytic appears as one option among others, with what it covers and what it does not.
October 2026. Offers and the law change. Check the contract, the EU–US adequacy decision and the ANSSI catalogue before any purchase.
Starting with brands means comparing brochures, then discovering during the migration that a service cannot keep up. The six questions below should be asked in this order, because each one eliminates options before the next. They also apply to a decision to stay.
The common mistake is to let criterion 2 answer criterion 1. Management may want a European operator while the finance department lives in Excel. The answer is then often to separate the uses rather than pick a side.
US company. The most complete suite for Office, Teams, enterprise identity and integrations. It covers installed and online office applications, Exchange, OneDrive and SharePoint, Teams, Entra ID, Power BI, Power Platform and Copilot. For eligible tenants, Microsoft keeps customer data and pseudonymised personal data in the EU or EFTA (EU Data Boundary), with written exceptions: support, certain escalations, optional features.
The typical profile is an organisation whose information system is built around this suite: a subsidiary whose parent company imposes Teams, an engineering firm whose calculations run in Excel. For such an organisation, the question is mainly: what needs to be documented in order to stay?
What to check before signing or renewing.
The main limitation. Data residency answers the question “where are the disks”. It does not change the nationality of the operator. Microsoft remains a US company, subject to US law for the data it holds or controls. The details are in protecting a business from the CLOUD Act.
Relevant when these features are the working tool, or when the parent company, customers or sector impose this ecosystem. Data residency and the DPA allow many European companies to keep it while documenting the transfers. See GDPR and Microsoft 365 and Microsoft 365 or a sovereign solution.
Less relevant when the real need is email and files, and management wants a European operator. Paying for the breadth of the suite purely out of habit is a weak reason. The legal reason alone is also a weak reason if Excel runs the business.
US company. The best comfort for in-browser editing and simple sharing. Data regions for covered content, depending on the edition. Some logs are not within this scope. Control over the location of support is an option (Assured Controls), not the default for every offer.
The typical profile is an organisation born in the browser, for example an agency whose teams write in Docs and share Drive folders with their clients.
What to check before signing.
The main limitation. Google is not a European operator. A European region does not remove Google from US law for the data it holds or controls. The legal framework is of the same type as Microsoft’s.
Relevant for an organisation that lives in Docs and Drive, and whose subscribed edition covers the required residency. See GDPR and Google Workspace.
Less relevant as a “European alternative”: Google is not a European operator. It is a functional alternative to Microsoft, with a legal framework of the same type. To leave Google in turn, the page European alternatives to Google Workspace applies the same method.
French company. Two separate subjects, often confused.
The SecNumCloud-qualified infrastructure offers (scopes named in the ANSSI catalogue, including private cloud offers, dedicated server offers and, in 2026, a public cloud offer) meet a need for qualified hosting. They are not an office suite. A LeMagIT article from September 2026 reports the qualification of a public cloud offer; the reference remains the ANSSI catalogue, which names each qualified offer and its scope.
The Zimbra email offers are hosted in France by OVHcloud. The software is developed by Synacor, a US company. OVHcloud is the operator of the mailboxes. They include mail, calendars, contacts and, depending on the plan, files and online editing. This is not the equivalent of Office or Teams.
On the email side, the typical profile is an SME that wants mailboxes hosted in France with a large operator. On the infrastructure side, it is an organisation that hosts its applications on a qualified offer, with the team to operate them.
What to check before signing.
The main limitation. These are building blocks: email on one side, infrastructure on the other. Assembling a complete digital workplace remains your responsibility.
Relevant for email hosted in France by a French industrial player, or for qualified infrastructure when the catalogue matches the need.
Less relevant if you are looking for a CRM, telephony and a single point of contact for the entire digital workplace. That is not what the email offer is for.
Nextcloud GmbH is a German company. It develops software for files, co-editing, chat and calendars, which you host yourself or which a provider hosts. Nextcloud is not, on its own, a cloud: without an operator, there is no data location. With a European operator or an installation on your premises, the framework is that of the operator.
Co-editing relies on Collabora or OnlyOffice. Email is not the historical core of the product (email components exist; a complete business email service must be assessed separately).
An organisation with an operations team can install it in-house. An SME without IT staff will rather take it from a hosting provider, and it is then that hosting provider that needs to be assessed.
What to check before signing.
The main limitation. The software does not run itself. An installation that nobody maintains becomes a risk, and the quality of the service depends entirely on the operator.
Relevant for regaining control over files, in-house or with a chosen hosting provider, including for large organisations that have the operations teams.
Less relevant if you want email, support and operations without an in-house team, and nobody is designated to maintain the server.
Swiss company, independent, data hosted in Switzerland. Switzerland is outside the European Union and covered by an adequacy decision. The law applicable to a Swiss hosting provider is Swiss law, supplemented by the GDPR when it processes data of persons located in the Union for a customer established there.
kSuite brings together mail, kDrive, kChat and kMeet. Online editing is done with OnlyOffice or, on certain offers, with Microsoft online applications hosted in Switzerland, which require a Microsoft subscription.
What to check before signing.
Relevant for an SME that wants an integrated suite, large storage and a European hosting provider in the geographic sense, and that accepts Swiss law.
Less relevant if the specifications require an operator and data within the European Union, or if advanced Excel remains indispensable. Infomaniak says so in its own way: offline, you need an office suite on the workstation.
These players meet a narrower need than the previous ones. They are often the right choice for one building block, rarely for the whole digital workplace. Email services are compared in more detail in choosing a European business email service.
BlueMind, a French company, is a collaborative email service designed for Outlook, the web and mobile devices. It is deployed on your premises or with a partner hosting provider. The software vendor is French; the operator depends on the deployment. To check: Outlook for Windows and, separately, Outlook for Mac.
Relevant for a sovereign email project, particularly in large organisations, and when Outlook is imposed on users.
Less relevant if you expect a files-CRM-telephony suite: BlueMind is not one on its own.
Proton, in Switzerland, is relevant for end-to-end encryption of email and storage, with the limitations that this encryption imposes on search and administration. Content remains unreadable to the operator; in return, server-side search, certain delegations and conventional anti-spam are limited.
Relevant for a strong confidentiality need: a legal department, a team that exchanges sensitive documents.
Less relevant as the general email service for a sales team. It is not a replacement for Office.
German email hosting providers (for example Mailbox.org) offer mailboxes with a German operator, accessible via IMAP.
Relevant for individual mailboxes or small teams that want a German operator and IMAP.
Less relevant for a company looking for the complete digital workplace: these offers do not aim to provide it.
Offers that pair Microsoft or Google technology with a qualified French operator (several such projects exist; the ANSSI catalogue is decisive) meet a need for infrastructure or trusted cloud. To check: the name of the offer in the catalogue, not the project announcement.
Relevant for an organisation whose data or calls for tenders require a qualification, and that wants to keep a familiar technology.
Less relevant for a twenty-person SME looking for a suite: it is not the same purchase.
| Main need | Option to examine first |
|---|---|
| Excel, Teams, enterprise integrations | Stay on Microsoft 365 |
| Docs and Drive on a daily basis | Stay on Google Workspace, after checking the edition; or Klytic Docs (dedicated Nextcloud instance, collaborative editing), after a trial on your documents |
| Email hosted in France | OVHcloud; or Klytic, French operator, on your servers or in the chosen hosting zone |
| Files you want to keep on your premises | Nextcloud, if you operate it yourself; or Klytic Docs, dedicated Nextcloud instance installed on your servers |
| Integrated suite, Swiss law accepted | Infomaniak |
| Email only, French software vendor, Outlook | BlueMind, on your premises or with a hosting provider |
| Strong email confidentiality | Proton, accepting its search and administration limitations; or Klytic Mail, encrypted with the customer’s key, S/MIME certificate as an option |
| Mail, files and online editing, video conferencing, CRM and telephony, à la carte, French operator | Klytic |
| Infrastructure qualified SecNumCloud by name | The service listed in the ANSSI catalogue |
No row in this table is a quality ranking. A “first” option fails as soon as the neighbouring criterion is yours. The pages migrating from Microsoft 365 and checklist take over if the decision is to move at least the email.
A suite choice rarely fails on technical grounds. It fails because offers were compared before knowing what was being bought. Four steps are enough in most SMEs and mid-sized companies.
The common mistake, at step 4, is to want a single answer for the sake of simplicity. A single answer is simpler to buy, not necessarily to live with.
No, in 2026. European and Swiss suites cover mail, files, online editing, video conferencing and sometimes chat. Advanced Excel, Power BI, the Teams ecosystem and line-of-business add-ins have no general equivalent among European operators. An offer that promises otherwise without reservation is overselling its product.
No. Qualification applies to a specific offer, with a scope named in the ANSSI catalogue. It does not pass to an application installed on top of it, nor to another offer from the same group. If your call for tenders requires SecNumCloud, ask for the exact name of the offer and check it in the catalogue.
Geographically, yes; legally, it depends on what your specifications require. Switzerland is outside the European Union and benefits from an adequacy decision by the Commission. If your requirement is “data within the European Union”, a Swiss hosting provider does not meet it. If it is “European operator outside US law”, it can meet it.
The operator is European, the software vendor is not. What matters for access to data is the company that holds the servers, the backups and the administration access. The software vendor’s country remains a piece of information worth noting, without confusing it with the former.
Klytic is operated by Dedicace Software, a French company. The suite is à la carte: each service is purchased separately, you can take just one, and you can keep Microsoft 365 by adding only the filtering, placed in front of the mailboxes. The services are based on proven or open source solutions and on modules and services developed by Klytic; the isolation of services is ensured and managed by Klytic servers developed for this purpose.
Klytic is not SecNumCloud-qualified. It does not replace advanced Excel, Power BI or Teams. It does not offer general immunity: a French operator remains subject to French law, and a French judge can order the disclosure of data.
Before signing, ask Klytic the same questions as the others: exact location, holding and encryption described in the contract, filtering level subscribed, trial on your workstations and your files.
Relevant for an organisation that wants to build its own suite, a French operator, and hosting with that operator or on its own premises. Also relevant for an in-house team that wants to administer Nextcloud itself: the customer is also an administrator of its instance, and Klytic adds assistance, maintenance, backup and security.
Less relevant when the business runs on Office, or when a call for tenders requires SecNumCloud.
Accessed in October 2026. The ANSSI catalogue takes precedence over press articles for any qualified offer.
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