Zyntra OS by Double Support
Zyntra OS for companies in the United States
Double Support, a software company from Amman, Jordan, with an office in St. Petersburg, Florida, makes Zyntra OS: sales tax worked out by AvaTax on every line, the payment, bank and shipping connections US companies use, and English-speaking call center teams for US companies.
What Zyntra OS does for a company in the United States
Sales tax by AvaTax
Each address checked by AvaTax, and each line of a sales order, an invoice or a credit note priced with its state, county, city and district tax; the invoice is recorded with AvaTax when it is issued and voided there when it is cancelled.
Avalara AvaTax integrationPayments: Stripe, Authorize.net, PayPal and Klarna
Your customer pays an invoice online by card through Stripe, Authorize.net, Braintree or 2Checkout, with PayPal, or later with Klarna.
Stripe integrationBanks through Plaid
Your bank accounts read through Plaid, their transactions reaching Accounting › Banking to be matched.
Plaid integrationShipping and calls
Labels and rates with FedEx, DHL Express, Shippo or EasyPost; calls and text messages through Twilio or RingCentral.
Shippo integrationCall center teams
English-speaking agents with an American accent on calls, chat and email, from Amman, for companies in the United States.
Call center agentsArabic and English screens
Every screen of Zyntra OS works in English and in Arabic, right to left; each person picks their own language.
One system, and an edition for your sector
Sales and CRM, accounting, HR and payroll, purchasing and inventory, projects and support in one system — and editions for law offices, real estate, hotels, online shops, clinics, dental clinics, contracting, car workshops and more.
Zyntra OS featuresPrices
One price list for every country, on the pricing page: choose the modules you need and see the price before you talk to anyone.
PricingSee it working
Pictures of a made-up company in the United States, taken from Zyntra OS itself.
AvaTax, set up in the company
The AvaTax card: the account, the sandbox or production, and the company code the invoices are recorded under.

An invoice with its sales tax
An invoice to a customer in Florida: its sales tax worked out by AvaTax line by line, and the invoice recorded in AvaTax.

Questions from companies in the United States
Does Double Support work with companies in the United States?
Yes. Double Support has an office in St. Petersburg, Florida, and clients in the United States. It makes Zyntra OS, its business system, and runs English-speaking call center teams for US companies.
Does Zyntra OS work out US sales tax?
Yes, through Avalara AvaTax with your own AvaTax account: each line is priced with its state, county, city and district tax, the issued invoice is recorded with AvaTax, and a cancelled one is voided there.
Which payment gateways work for a US company?
Stripe, Authorize.net, Braintree, 2Checkout, PayPal and Klarna, each set up with your own account.
Can Zyntra OS read my US bank accounts?
Yes, through Plaid; or you load the bank's statement file, and Zyntra OS matches it to your accounts.
Which carriers can I ship with?
FedEx and DHL Express directly, and many more through Shippo or EasyPost, with your own accounts.
Is Zyntra OS in English?
Yes. Every screen works in English, and in Arabic for a team that needs it; each person picks their own language.
Tell us about your company
Call or email us with where you work and what you need, and we will come back to you.

