Migrate from Microsoft 365 to free software
Files, documents, meetings and email: the same habits, with free software.
See the solutionLeave Microsoft 365 and Windows
We replace Microsoft 365, Windows or Google Workspace with free software, step by step. We audit, migrate, train your teams, then run your infrastructure.
Our services
Audit
Inventory of your licences, desktops, servers and access rights, with a costed migration plan.
Deployment & migration
Migration of your servers, desktops, accounts and collaboration tools to free software, in stages.
Operations start-up
We take over your environment to start support, MCO or managed services: access, contacts, documentation.
Your projects
The free software we install, with the migration method and its limits.
Nextcloud, the free software alternative to OneDrive, SharePoint and Teams
Files, online editing, video calls and calendars on one server.
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Replace Exchange and Outlook
Your mailboxes, calendars and contacts moved, with the same addresses.
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Move your desktops from Windows to Linux
Zorin OS, Ubuntu or Debian, rolled out and explained to your users.
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La Suite numérique
Tchap, Visio, Docs and Grist are in production, Fichiers and Messages still young.
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Local authorities, ministries and public bodies
Dependency reduction plans, Linux desktops and La Suite numérique.
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Free software for non-profits
Tools with no per-account licence, for staff and volunteers alike.
See the solutionCommitments
Proximity
One point of contact
The engineer who answers you is the one working on your servers.
Auditable free software
Open code, with no dependency on a single vendor.
Detailed quotes
Each quote lists days, deliverables and hosting costs.
Reversibility
Hosting in your name and documentation handed over: you can change provider.
Our training courses
We train your users and your IT team on Linux, Nextcloud, NixOS and DevOps, on-site or remote.
Zorin OS training, moving from Windows to Linux (2 or 3 days)
Zorin OS training for staff leaving Windows. Desktop landmarks, files, printers, LibreOffice, Windows software. Optional day for champions.
Nextcloud training for users and referents (1 or 2 days)
Nextcloud training to leave Microsoft 365. Day 1: files, sharing, Talk and calendar. Day 2: accounts, groups and permissions, for referents.
Grist training (1 or 2 days)
Grist training to replace shared spreadsheets. Day 1: tables, views, forms. Day 2: formulas and access rules, for power users.
Linux administrators training (3 days)
Linux administration training to move a fleet off Windows. Debian desktops and server, updates, backups and migration plan.
NixOS training (3 days)
NixOS training for IT teams. Install NixOS, organise a fleet in a flake and deploy it to production.
DevOps training, Ansible, Terraform and CI/CD (3 days)
A 3-day DevOps course. Ansible, Terraform and GitLab CI, up to a complete chain from commit to deployment.
News
October 20, 2026
Office 2016, 2019 and 2021 end of support: move to LibreOffice
Office 2016, 2019 and 2021 no longer get patches. LibreOffice opens your Word and Excel files with no licence, no new Office purchase and no subscription.
Read moreContact us
Describe your context. An engineer will reply by email.
How it starts
- A one-hour first conversation By video call, with an engineer. You describe your context, tools and constraints, and we show you the relevant software running.
- An audit or a scoping phase 2 to 5 days depending on the scope. You receive a report, an action plan and a quote. The report is yours, whatever comes next.
- The project, then ongoing support Migration, installation or development, in stages you sign off. Then support, maintenance or managed services, at the level you choose.