Diagnosis
- We review your proprietary tools and what really slows the team down.
- A clear report: what to replace, with what, in which order.
- No commitment to continue. Yours to use.
Your email, files and backups hosted in France, without depending on Microsoft or Google
I help companies win their digital independence. For SMEs and small businesses in Alsace and the Territoire de Belfort, and remotely anywhere in France.
Method
The method: Diagnosis → Deployment → Managed service (we take care of your IT every month)
Deployment
- Deploy open-source infrastructure: files, messaging, invoicing, VPN, light AI if useful.
- Gradual migration of data to tools you control.
- Hosting in France or Europe, or on-premises under conditions.
- A demo so we can see together that it holds.
Managed service
- Monitoring and maintenance of the full sovereign suite.
- Every two weeks, a transparent report on what was done.
- Premium support: dedicated page and unlimited tickets.
Use cases
The core offer: replace Drive, Teams, Outlook
We focus first on what the team uses every day. Local AI and custom build stay optional.
Fichiers & collaboration
Remplacer Drive / SharePoint par un partage de fichiers open source que vous contrôlez, hébergé en France.
Messagerie & agenda
Remplacer Outlook / Exchange / Teams messagerie par une messagerie et un calendrier sur vos serveurs.
Facturation & signature
Sortir des boîtes SaaS de facturation ou de signature pour des équivalents open source, branchés sur vos process.
Réseau privé & accès distant
VPN et accès sécurisés pour que l’équipe travaille depuis n’importe où — sur votre infra, pas celle d’un éditeur.
For SMEs and small businesses in Alsace and across mainland France that want easier work without depending on proprietary vendors.
Services
Services and pricing
Four services: a check-up to start, then diagnosis, deployment and monthly follow-up. FR/EU hosting is included in the monthly follow-up; the price mainly depends on the number of users and scope.
Express check-up
190 €
One-page report · deliverable within 48 h
- Analysis of your domain and email (from public data)
- Review of your backups: complete, tested, restorable?
- 3 priority actions ranked by urgency
- The report is yours
No commitment to continue
Order the check-upLes sources d’un développement sur mesure appartiennent au client et ne sont pas publiées.
How much does it cost?
What does your IT really cost you? Send us three invoices (Microsoft 365, Google Workspace, invoicing, backup…). Within 48 h, you receive a page comparing what you pay today and what the equivalent open-source setup hosted in France would cost. Free, no commitment.
Sample journey
From proprietary tools to infrastructure under control
We map what you use today, pick open-source equivalents, migrate, then operate.
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Diagnosis
Map proprietary tools and the real need.
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Scope
Which bricks to replace first, and in which order.
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Deployment
Deploy the open-source tools, FR or EU hosting.
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Migration
Gradual cutover of data and day-to-day usage.
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Managed service
Monitoring, maintenance, biweekly report.
Expected outcome: a sovereign business suite (files, messaging, invoicing, remote access, light AI if useful), FR/EU hosting, one contact for day-to-day operations.
Why us
Why Elsässer?
01
Hands-on, not slide decks
Over ten years of Linux systems administration and open source. We install what actually helps day to day.
02
Replace, don’t pile on
The goal isn’t another tool on top: it’s leaving proprietary suites and keeping control.
03
We start with no commitment
The diagnosis clarifies the need. Only then do we decide together what comes next.
04
Close when it matters
Calls anywhere in France. Remote as soon as access allows. On site mainly in Alsace and the Territoire de Belfort.
05
A bill you can read
Managed service with a report every two weeks. You see concretely what was done.
Blog
Latest articles
Guides and field notes on sovereign open-source infrastructure for SMEs.
Over ten years of Linux systems administration and open source. I design, deploy and support infrastructure for SMBs — one clear contact, hands-on work.
What does day-to-day support look like?
Managed service keeps things simple: monitoring, tested backups, documented procedures. Your access stays with you — the infrastructure is yours.
What if I want to evolve later?
Everything is open source: your data and tools stay yours. You keep control, or hand things over to whoever you choose.
FAQ
Frequently asked questions
What is Elsässer?
Elsässer replaces proprietary infrastructure for SMEs and small businesses with sovereign open-source alternatives: diagnosis, installation of a business suite (files, messaging, invoicing, VPN, local AI…), then managed service.
Who is Elsässer for?
For SMEs and small businesses in Alsace and across mainland France. Founders and finance leads who want easier work without SaaS complexity.
What do you replace in practice?
Collaborative suites and proprietary business tools (Drive, Teams, SaaS invoicing or signature boxes) with open-source equivalents hosted in France or Europe. The tool follows the need, not the other way around.
What is sovereign AI here?
Light models running on your infrastructure for simple tasks: sorting documents, classifying, summarizing, routing. Useful day to day, without sending your data to a big cloud provider.
Where do we start if we have never worked with you?
With the express check-up: 190 €, a one-page report within 48 h, no commitment to continue.
Do you need access to my systems?
Not for the check-up. Domain and email checks use public information. Backups are reviewed in a 30-minute call.
How much does it cost?
Express check-up 190 €. Diagnosis 490 €. Deployment at 350 € / day (typically 3 to 5 days). Managed service 290 to 390 € per month. Custom development sized to the need, day rate.
Do we have to take everything at once?
No. We go brick by brick: often files and access first, then messaging, invoicing or AI depending on priority. A bundled offer will come later.
Which applications do you install?
Those that match the use: file sharing, messaging, invoicing, signature, private network, app hosting and light AI. No fixed catalog — the tool follows the need.
Can we install a server on our premises?
Yes, subject to conditions, and within a reasonable radius around Alsace and the Territoire de Belfort. We can deploy on site when it makes sense — not 150 km for a one-off visit.
Where do you work?
Remote calls anywhere in France. Diagnosis and interventions also remote when access is available, especially for installs on a remote server rather than a local machine. On site mainly in Alsace and the Territoire de Belfort.
What happens after installation?
With managed service: monitoring, maintenance of the full suite, continuity, a report every two weeks and dedicated support.
First contact
Request a callback
Leave your name and a phone number or email. We call you back to frame the need — no time slot to pick.
Prefer to write? contact@elsasser.tech
Remote calls across France. On-site mostly in Alsace and Territoire de Belfort.
Newsletter
Practical ideas on digital sovereignty — no spam.
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LinkedIn
Des outils IA économes et souverains avec une utilité réelle
Contrôler une facture ou un CV n’exige pas un LLM outre-Atlantique. Prototype de vérificateur d’écarts : modèle léger, hébergeable en France (≈2,1 Go de RAM), utile sans dépendance aux API coûteuses.
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LinkedIn
5 alternatives open source à vos outils SaaS
Nextcloud, Mattermost, AppFlowy, ONLYOFFICE, Keycloak : cinq alternatives pour garder la propriété de vos données — et pourquoi leur déploiement est aussi leur force.
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