Replace Microsoft Office 365
Wimi is the French alternative to Microsoft 365 for organizations that refuse to compromise their sovereignty. Complete suite, hosted in France, immune to extraterritorial laws.
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Why organizations are leaving Microsoft 365
From legal risks to technological dependence: discover how Wimi meets each Microsoft 365 limit.
The Cloud Act gives U.S. government agencies legal access to all of your data at Microsoft. Wimi hosts 100% of your data in France, with total immunity to extraterritorial laws. Your organization is regaining control of its digital sovereignty.
Microsoft imposes its closed ecosystem with an equivalent functional perimeter and makes migration more expensive each year. Wimi supports you in a secure migration without data loss or business interruption. You regain your strategic and technological autonomy.
Restricted distribution, SecNumCloud (Q1 2026): European qualifications that Microsoft does not hold. Wimi meets the most stringent French security requirements. Your strategic information is protected according to ANSSI standards and benefits from total RGPD compliance.
Microsoft imposes increases without notice and charges each external guest. Wimi guarantees transparent and stable pricing, with unlimited free guests. You plan your IT budget calmly over the long term.
All the features of Microsoft 365, without the compromise
Messaging, storage, collaboration and videoconferencing: Wimi offers the equivalent of each Microsoft 365 tool, hosted in France and secured by the State.
The French alternative to Microsoft Teams
Create compartmentalized spaces for each project with tasks, files, discussions, and integrated calendar. Your teams collaborate as effectively as with Teams, without exposing their data to the Cloud Act.
The sovereign alternative to Microsoft Exchange
Keep your email addresses by migrating to a French infrastructure. Inbox built-in, domain management, anti-phishing protection: all the features of Outlook without American laws.
Replace OneDrive with sovereign storage
Store your documents in France with real-time co-editing, multi-device synchronization and controlled sharing. All OneDrive features without legal exposure.
Organize your videoconferences in complete confidentiality
Replace Teams Meetings with a solution from video conferencing sovereign. Unlimited calls, screen sharing, secure recording: your strategic meetings remain confidential.
Migrate from Microsoft 365 without interruption
A proven methodology in 4 steps for a secure transition. Your teams remain operational, your data is preserved, your business continues.
Complete audit of your Microsoft 365 environment
- Data volumes (emails, files, calendars)
- Active users and license distribution
- Third-party integrations and connected apps
- Migration schedule adapted to your business constraints
Secure recovery of all your data
Mails, files, calendars and contacts are transferred to Wimi without loss. We configure your workspaces, set up your access rights and test each feature before the switch.
Training your teams in the new solution
Training sessions adapted to each user profile for rapid adoption. Your employees master Wimi in a few hours and find their bearings immediately.
Final switch and dedicated support
The migration takes place without interruption of service. Our team accompanies you during the first weeks to answer your questions and optimize your daily use.
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"Au CD87, Wimi a été adopté pour sa souveraineté, son coût maîtrisé et sa richesse fonctionnelle. Son ergonomie, son déploiement SaaS sans additif et l’intégration d’Onlyoffice dans Wimi Online, ont permis d’abandonner Microsoft Office et de favoriser la coédition pour tous nos agents. La visio, le chat et la gestion de projets intégrés rendent les services autonomes et efficaces. Une solution simple, soutenue par un accompagnement commercial de proximité, que nous recommandons sans hésiter aux collectivités."
“Wimi is a solution perfectly suited to collaboration in project mode. Its ease of handling and the flexibility offered according to uses convinced us. Covid-19 and the periods of teleworking have only amplified the need for such a solution to maintain exchanges and continue our projects.”
"Wimi nous permet de centraliser notre processus de création et de planification de contenus. La plateforme nous apporte une vision claire et centralisée de notre production. Je le recommande sans hésiter aux équipes qui veulent gagner en agilité et optimiser leur processus de création de contenus."
"Wimi nous permet de faciliter la communication entre le staff et les joueurs, de fluidifier le partage des données et d’accélérer la planification de nos évènements sportifs. Le budget est aussi très attractif au regard du périmètre fonctionnel, riche et ergonome couvert par la solution."
Prepare for your migration from Microsoft 365
Your questions about migrating from Microsoft 365
How long does it take to migrate from Microsoft 365?
The complete migration generally takes between 4 and 6 weeks depending on the size of your organization and the volume of data. This timeframe includes the initial audit, data transfer, team training, and final changeover. We adapt the schedule to your constraints to guarantee a transition without impacting your daily activity.
Will I lose my emails and files during the migration?
No, no data is lost during the migration. We transfer all of your emails, files, calendars, calendars, contacts, and conversation histories to Wimi. Each stage is tested in a secure environment before the final changeover. Your employees find all their data exactly as before, hosted in France.
Is Wimi really as complete as Microsoft 365?
Yes, Wimi covers all the uses of Microsoft 365:
- Messaging (Wimi Inbox & Mail) → replaces Outlook/Exchange
- Collaboration (Workspaces) → replaces Teams/SharePoint
- Storage (Drive) → replaces OneDrive
- Video conferencing (AirTime) → replaces Teams Meetings
- Task Management (Tasks & Gantt) → replaces Planner
With the addition of: French hosting, Cloud Act immunity, and SecNumCloud certified security.
See all features
Can I keep my current email addresses?
Yes, you keep your existing email addresses. We migrate your domain name and your mailboxes to the Wimi Mail infrastructure without interruption of service. Your employees continue to send and receive emails from their usual addresses, with the same user experience as Outlook but hosted in France.
How do you manage compatibility with Office (Word, Excel, PowerPoint)?
Wimi allows you to view, modify and co-edit Office documents (Word, Excel, PowerPoint) directly in the browser thanks to our integrated co-editing tools. Your files remain in the standard Microsoft Office format, ensuring full compatibility with your external partners. You can also synchronize Wimi Drive on your computers to work with your local Office suite.
Learn more about Wimi Drive
What is the cost compared to Microsoft 365?
Wimi offers transparent and stable pricing, with no surprise increases. External guests are unlimited free (unlike Microsoft, which charges each user). Depending on your current Microsoft 365 configuration, savings can be significant, especially if you collaborate regularly with partners, customers, or service providers. Request a custom simulation to compare precisely.
Migrate to Wimi without risk or interruption
Free audit, personalized migration plan, dedicated support: find out how to leave Microsoft 365 with complete peace of mind.