A request arrives by email
“Hello, we have seen signs of pests near the bakehouse. Could you come by this week? Mrs. Lemaire, 12 Market Street.”
AI reads the message, creates the client record, flags the request as “urgent” and suggests a time slot.
New
Custom business software · AI · Automation
HOSTA OS, custom business software, AI and automation
Your whole business, in one motion.
From first contact to paid invoice, HOSTA connects your teams, your tools and your information. We build what you are missing and connect what already works.
A first 30-minute call to pin down your priority and the next steps.
Client case study · in use every day
CockPit, the management system of DKM Experts.
For DKM Experts, a multi-branch pest control and hygiene services company with crews on the road, HOSTA OS designed CockPit: one single system where there used to be one piece of software per department.
CockPit for DKM Experts, in detail
- The need
- Requests, quotes, schedules and invoices scattered across several tools and spreadsheets.
- What was built
- Requests and quotes, route planning, the technicians’ app, service reports, invoicing, collections, portals for key accounts, AI agents on specific tasks.
- What it makes possible
- The report signed on site goes to the client and prepares the invoice; clients follow their sites without calling; reminders go out on time, reviewed by the team.
- Status
- In use every day, at the office and on the road.
Real CockPit screenshots, shown with fictitious data: no real client or employee appears.
Already running, built by us.
Systems in daily use at our clients. For each one: the need, what was built, what it makes possible. Photos are illustrations.
- 99 domains, from a single vendor
- 00 subcontractors: the people who write the code answer you
- 30 min30 minutes of conversation to leave with a plan
- 24 h24 hours business hours to call you back
They trust us
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360° softwareAn entire services company, in one system
360° softwareAn entire services company, in one system
Hygiene and pest control, several branches, crews on the road. CRM, route planning, technicians’ app, invoicing, collections, client portals and AI agents: one system where there used to be one piece of software per department.
- One tool instead of one per department
- Schedules, reports and invoices that flow without re-entry
- Clients kept informed without having to call
CRM, field, invoicing, AI
Talk about it -
Client portalsPortals for key accounts
Client portalsPortals for key accounts
Hotel groups, housing providers, national retail chains: each client sees its sites, service visits, reports and invoices, up to date, without calling anyone.
- Every site and every report, up to date
- Documents found in one click
- Fewer calls just to ask for a document
Client portals, synchronization
Talk about it -
AI agentsAI agents in meetings and on the phone
AI agentsAI agents in meetings and on the phone
Minutes, decisions and action items sent before the end of the day; replies to clients at night, in their language, with a human who takes over with a single word.
- Minutes go out the same day
- Replies at night, in the client’s language
- A human takes over with a single word
AI agents, AI infrastructure
Talk about it -
Industry exampleOne example among many: short-term rentals
Industry exampleOne example among many: short-term rentals
Guest arrival, cleaning, maintenance and automatic replies for short-term rental properties. The same foundation serves hotels, restaurants, manufacturing and services.
- Self check-in, codes sent at the right time
- Cleaning scheduled as soon as a booking comes in
- Automatic replies, reviewed when needed
360° software, field, AI
Talk about it
Does this sound familiar?
Tap what looks like your day-to-day. We hear about it every week.
Your mini-diagnostic Sample result
Your priority:
What we would build first:
Rollout: rough estimate, to be confirmed
Nothing checked yet.
One job, from request to paid invoice.
Follow a request from Lemaire Bakery through six steps. At each action, see what changes next, and where AI does its part.
Demo · fictitious data
Lemaire BakeryJob D-2026-114New request
The quote is ready to approve
| Bakehouse inspection and treatment | $280.00 |
| Two follow-up inspections | $120.00 |
| Total before tax | $400.00 |
AI uses your rates and the client’s history; you review and approve.
The signed quote reaches the schedule
Tuesday, October 21, 8:30 a.m. · Team A (Léa M.) · travel time worked into the morning route.
The client gets a confirmation and a reminder the day before, without anyone writing them.
The service visit happens on the phone
Before and after photos, products used, Mrs. Lemaire’s signature. No signal in the cellar: everything is saved on the phone, then sent as soon as the network is back.
The report sends itself
Report R-2026-388 (PDF, 3 pages) sent to the client and filed in her record.
AI cleans up the technician’s notes; the manager reviews before sending.
The invoice and the client portal
Invoice F-2026-208 ($480.00 incl. tax) created from the report. In her portal, Mrs. Lemaire sees the quote, the report, the invoice and the next follow-up inspection.
When payment is due, the reminder goes out on time; the team reviews it before sending.
Where to start, depending on your situation.
Most of our clients start through just one of these doors. The other two follow once the first release has proven itself.
- Connect your toolsYour current software finally shares its information: a client entered once is entered everywhere. We keep what works.See how
- Automate tasksReminders, quotes, meeting notes, sorting requests: specific tasks handed to automation and AI, under your control.See the agents
- Build softwareCRM, back office, field app, client portal: what you are missing, built for your trade and delivered in releases.See the domains
What repeats itself should no longer take up your time.
Quotes, reminders, invoices, schedules, reports: we connect your tools and automate the handoffs. Nothing to re-enter, nobody to retrain.
Ready
AI agents that do the work. You stay in control.
They read, sort, draft, reply and check, on your data and wherever you host it. They prepare, you approve.
- Business agents
- AI infrastructure
- Your data stays yours
Hello. I am a sample agent: I answer four typical requests, on fictitious data. Nothing is sent.
Example
My route today
Léa M., team A · Thursday
- Lemaire BakeryQuarterly inspectionDone
- Restaurant, CordeliersInspection and reportIn progress
Service completed
Photo added
Client signature
- Morel WorkshopCommissioningUpcoming
- Park HotelMaintenanceUpcoming
- Les Pins ResidenceInspection reportUpcoming
Offline: saved on the phone
The visit in progress belongs to.
Your field crews know what to do. You see what is stuck.
Routes, jobs, time tracking, photos and signatures from the phone, even with no signal. The office sees everything live.
- Field app
- Logistics
- Time tracking
- Client portals
The map loads as you approach.
Pick a team: its route lights up and the map zooms in.
The whole system, from a single vendor.
From the client’s first call to the paid invoice, from the AI agent to the server it runs on: we write every building block and connect them all.
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Example
It reads the request, drafts the reply, you approve with one click.
Hover: three scenarios play, client, guest, schedule.
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Example
A signature triggers what comes next, with no re-entry.
Contract signed on 10/14, service scheduled for 10/21, invoice sent the same day.
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Example
Every deal moves from one column to the next, right before your eyes.
Park Hotel just signed: the schedule has been notified.
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Example
Invoiced, collected, overdue: updated every evening.
The payment arrives, the invoice is settled, the reminder is canceled.
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Example
This week’s attendance, time off and replacements.
Thursday and Friday, SA covers PD’s routes.
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Example
Today’s route, stop by stop.
Stop 3 in 8 min: the client gets a text message.
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Example
The technician checks off, takes photos, gets a signature. Even with no signal.
The report goes out with photos and signature as soon as the network is back.
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Example
Who gets in, from where, with which rights.
Every access is logged, every permission has an end date.
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Example
Hosted in France, backed up, monitored.
A restore is tested every month, not just the backup.
Software that fits your business. Not the other way around.
HOSTA OS designs and builds what your company cannot find off the shelf: its CRM, its ERP, its field app, its AI agents, its infrastructure. One system, yours, maintained over time by the people who wrote it.
For real estate, hospitality, restaurants, field services, manufacturing, logistics, healthcare, and your industry.
Verified backups0
Verified sign-ins0
Denied access0
Security loglive
Your data stays yours. Your access stays under control.
Right-sized infrastructure, tested backups, role-based permissions, regular audits. We build solid and we stay for the long run.
- Hosting chosen with you
- Backups verified every night
- Role-based permissions and two-factor authentication
What we do
- Access auditWho sees what, forgotten accounts, permissions that are too broad.
- Backups and restoreEvery night, the backup is checked: complete and readable. Regularly, we restore it to a copy to prove it brings everything back.
- Sign-in monitoringAlert on any unusual attempt.
- Tracked updatesPatches applied and logged, with no downtime.
Visit before you travel.
A 360° virtual tour of your premises, job sites or properties: walk through them from a screen, drop markers, keep a record of their condition.
- Visit before travelingThe client, the buyer or the team discovers the place from their desk.
- Prepare the service visitThe technician spots the access, the electrical panel and the area to treat before leaving.
- Keep proof of the conditionA dated tour, with its markers and photos, available at any time.
On request: measurements, floor plan and markers linked to your service records.
Social media, on autopilot.
We produce and publish the posts and videos for your social channels: the idea, the copy, the visual, the right time. Nothing goes out without your approval.
Number of the week: our delivery times are down 23% since September. The schedule is shared with the workshop, so every delay shows up the same day.
−23 %Average delivery timefrom 13 to 10 days
Instagram Reel, Wednesday 6:00 p.m.Park Hotel
“Your arrival, no waiting.” Copy written by AI, 9-second video: all it needs is your approval.
- 6posts
- 2published
- 1to approve
- 3scheduled
Ready
Sample data: fictitious clients, figures and visuals produced for the demo.
You talk to the people who write the code.
- We listenHalf a day at your place, with the people who will do the work. No hundred-page specification.
- You see it before we build itA clickable mockup of the first release: the main screens, with fictitious data. Its scope is agreed together before we start. You make corrections on the screen, not on the invoice.
- We deliver in releasesA first release in use within the first few weeks, then the next. Every release is useful on its own.
- We maintainHosting, backups, fixes and improvements, by the team that built it. No subcontractors.
What makes up a budget
- DevelopmentPriced per release, before we start.
- Migrating your dataClients, history, documents: imported and checked.
- OnboardingHands-on training with your teams, on their real tasks.
- MaintenanceHosting, backups, fixes and improvements.
- Third-party servicesAI, email or text messaging, maps: billed by usage, announced in advance.
After our first call
- The same dayA written summary of what we understood.
- Within the weekA proposal split into releases, each one priced.
- Before we buildThe clickable mockup of the first release, for your approval.
The origin of HOSTA OS
HOSTA OS is a French simplified joint-stock company (SAS), founded on September 10, 2026 and chaired by Joël RENGER. Its team designs, builds and maintains custom business software, AI agents and the infrastructure they run on, for clients such as DKM Experts.
Joël RENGERFounder and Chairman, HOSTA OS
Behind HOSTA, people.
No call center, no subcontractors: you talk to the people who write the code, from the first meeting to the latest update.
- Joël RENGERFounder and Chairman
Hugo MARTINÈSChief Executive Officer
IT expert teamDevelopment, AI, infrastructure
We call you back within 24 business hours. Promise.
A journey through time
From carved stone to artificial intelligence: fifteen eras, fifteen ways of running a business. In every era, the first to adopt the new tools got ahead.
![Stone carved with notches and pictograms, with a flint chisel]()
30,000 BC
Carved stone
Notches to count animals and days: the first memory kept outside the head.
![Clay tablet engraved with cuneiform signs and its stylus]()
3300 BC
Clay and cuneiform
In Sumer, merchants record on clay who owes what to whom. Accounting is born.
![Unrolled papyrus scroll, reed pen and cakes of black and red ink]()
2500 BC
Papyrus
Light, it rolls up and travels: Egypt runs its building sites and granaries on scrolls.
![Illuminated manuscript on parchment, goose quill and brass inkwell]()
800
Parchment and quill
In monasteries, scribes copy every page by hand. A single book takes months.
![Wood and brass screw printing press in an old workshop]()
1450
Gutenberg’s printing press
Screw press and movable type: a text is reproduced in a few days instead of a few months.
![19th-century industrial rotary press, cylinders, gears and stacks of printed books]()
1843
Industrial printing
Rotary presses, cylinders and gears: newspapers and books roll out by the thousands, every day.
![Brass Morse telegraph key and receiver on a walnut base]()
1844
The telegraph
A message crosses the country in a few minutes. Prices and orders travel faster than goods.
![Antique wooden wall telephone with brass bells and crank]()
1876
The telephone
People stop writing and start calling: a decision gets made within the day.
![Black and gold typewriter from the 1900s on an oak desk]()
1890
The typewriter
Letters come out clean and legible, in duplicate thanks to carbon paper. The modern office is born.
![Mainframe computer room with cabinets and magnetic tape drives]()
1951
The mainframe
One machine fills an entire room and computes a company’s payroll overnight.
![Beige personal computer with a CRT screen on a light oak desk]()
1981
The personal computer
Every desk gets its computer. The spreadsheet replaces the general ledger.
![1990s office: CRT screen, modem and phone cable]()
1995
The internet
Email and the website: the company opens its storefront to the whole world.
![Smartphone, mug and laptop on a light oak desk]()
2007
The smartphone and the cloud
The office fits in a pocket, the data in the cloud. Work happens from anywhere.
![Bright workspace, tablet and computer showing neural network patterns]()
2023
Artificial intelligence
AI reads, sorts, drafts and replies. As in every era, the first to adopt it get ahead.
![Light office with a laptop showing a dashboard]()
Today
Today: HOSTA OS
We build the tools of your era: custom-made, connected to each other, and you stay in control.
What people ask us before getting started.
“Custom software costs a fortune.”
We deliver in releases: the first one is useful within a few weeks and can be judged on its results. You never fund a six-month tunnel before seeing anything.
“What if you go out of business?”
The code and the data belong to you, hosted in France, exportable at any time. Nothing is locked in with us.
“My teams won’t adopt it.”
We build it with them, around how they actually work. A tool that fits the job doesn’t need a week of training.
How long until a first result?
After our call, a clickable mockup of the first release within a few days, then a first release in use within the first few weeks. The exact timeline is set together, release by release.
Will you replace our current software?
Only if it helps. Often, we connect what exists and replace what gets in the way, step by step, with no downtime.
Where is our data hosted, and where does the AI run?
Your data is hosted with a provider chosen with you. AI agents send a model provider only what the task requires; for each agent, we tell you which provider and what is shared with it.
And with no signal, in the field?
The app keeps everything on the phone: entries, photos, signatures. As soon as the network is back, it sends the data in order and flags any conflict instead of overwriting information.
Who maintains the tool afterwards?
The team that built it: improvements, fixes and fast response, with no subcontractors.
Does the AI have access to everything?
No. Each agent has specific permissions on your data, and nothing goes out without human approval when you decide so.
How much does it cost?
It depends on the scope. A budget is made up of development, data migration, onboarding, maintenance and any third-party services. Each release is priced before we start.
Thirty minutes. You leave with a plan.
Tell us what is holding you back. We tell you what we would build, in which order, and for how much.
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Mont Blanc from Chamonix, photo by Manuel Velazquez, CC BY 3.0