From the first WhatsApp message to the entry in your books
ClientOS brings sales, tax invoicing, people, payroll, accounting, stock and customer service onto the same data. Arabic first, and built for the laws of Egypt, Saudi Arabia and the Gulf.
Every app is open during the trial. No card needed.
- 10:42WhatsAppKarim at Al Riyada Hotel: “I need a quote for 20 27-inch screens”
- 10:58QuoteQ-2026-00088 · 20 screens with 14% VAT102,600.00
- 11:20SignedKarim accepted and drew his signature on the link✓
- 11:21InvoiceINV-2026-00142 · accepted by the e-invoicing system102,600.00
- 6 days onPaymentBank transfer · PAY-2026-00051102,600.00
- AutomaticEntry
JV-2026-00310 Account Debit Credit National Bank 102,600.00 — Customers · Al Riyada Hotel — 102,600.00
Balanced, and nobody typed it
Every department in your company, on the same data
The customer who messaged you on WhatsApp is the same one on the quote, the invoice and the statement. Switch on only the apps you need, and add more whenever you like.
From the first question to the repeat order.
Every invoice, payment and expense in the books by itself.
From the contract to the payslip, with no hand sums.
Projects, stock and property on the same data.
Built for the region's laws, not translated for them
Rules carry effective dates, and every figure on a payslip comes with its working, so you can check it yourself.
Egypt EG
- E-invoices and e-receipts to the Tax Authority's systems
- Social insurance, and income tax by bracket
- Withholding tax at 1%, 3% and 5%
Saudi Arabia SA
- ZATCA e-invoicing, phase 2
- GOSI, end-of-service award and the WPS file
- VAT return by box, and the Saudisation ratio
UAE and the Gulf GCC
- UAE e-invoices in PINT AE format
- Social insurance and end of service in the UAE, Kuwait, Qatar, Bahrain and Oman
- The SIF file for the UAE's wage protection
- Insured wage
- 12,000.00
- Rate
- 11%
- Rule
- social_insurance 2026.1
For your kind of company
Each kind of business switches on a different set of apps. These are the common ones.
- Trading and distributionDistributors, wholesalers and B2B suppliers Sales, Invoicing, Inventory & purchasing, Accounting
- Services and contractingMaintenance, consulting, contracting, installation Sales, Projects, Invoicing, Accounting, Customer service
- Shops and showroomsRetail shops, showrooms, branches Point of sale, Inventory & purchasing, Invoicing, Accounting
- Clinics and centresClinics, beauty centres, salons, training Appointments, Invoicing, Customer service
- Real estate developmentDevelopers selling units on instalments Real estate, Sales, Invoicing, Accounting
Fitted to how you work
You don't change how you work to suit the software. It's all in Settings, no developer needed.
- Your own fields on customers, products, deals and employees
- New kinds of request with the approval path you set
- Follow-ups that happen by themselves when a lead arrives, a deal is won or a ticket opens
- Your own reports, and invoices that look like your company
See the real product in a minute
A walk through the demo company: the deal board, a signed quote, a paid invoice, automatic entries, the income statement, payroll, the inbox and stock.
Start today, work tomorrow
“Start here” walks you through the steps in the order each one needs.
Want to look around first?
Open the demo company from inside your account: three months of real work in every app with fifty employees. Switch roles to see it as the accountant, a sales rep or a cashier.
Create the workspace
Your company's name and address on clientos.site, then confirm your email.
Company details and logo
Tax number and registration; your logo appears on invoices and quotes.
Import from Excel
Customers, contacts and products, with Arabic or English headers.
Opening balances
Cash, banks, customers, suppliers and stock in one place.
Invite your team
With ready roles: accountant, sales rep, HR, cashier, employee.
Your company's data is your company's alone
Each company sealed off
Every workspace is isolated in the database itself, not just on screen.
Permissions by role
Reps see their customers, cashiers see the till, and sensitive employee data is encrypted.
A log of every change
Who changed what and when, on invoices, customers and settings.
Two-step verification
With an authenticator app and recovery codes.
Continuous backups
Encrypted copies off the server, restorable to any past moment.
Your data stays yours
Export all your data in one file at any time, even after your subscription ends.
Questions
Do I need to install anything?
No. ClientOS runs in the browser on computers and phones, and staff check in and send requests from their phones. The only thing you might install is the ClientOS Signer on Windows, to sign Egyptian e-invoices.
Can I bring my existing data?
Yes. Import customers, contacts, products and leads from Excel or CSV files, with Arabic or English headers. Duplicates are skipped automatically.
I have several companies or branches. Does it work?
Yes. One workspace holds several companies and branches, each with its own currency, invoice numbering and settings, and you switch between them at the top of the screen.
Are the payroll and tax sums right?
The rules follow current law with effective dates, and each payslip line shows its working. We suggest reviewing your first payroll run with your accountant.
What happens when the trial ends?
Choose the apps you need, pay for them and carry on with the same data. If you don't, the workspace becomes read-only and you can still export everything.
Is it fully in Arabic?
Every screen and document is in Arabic and English, and each user picks their language. Invoices and quotes go out in the language the customer needs.
Try it on your company
Fourteen days with every app and no card. If you'd like us to set it up with you, we're here.
Every app is open during the trial. No card needed.