CloseOS is the operating system for high-ticket sales. One tool instead of six: visual pipeline, built-in call room, automated follow-ups, booking links, invoicing and closing KPIs. Plus e-signature with the payment collected in the same flow, so the client signs and pays without ever leaving the page. Three products: Sales for the solo closer, Business to run a team of closers and setters, Sign for contracts. Built in France, hosted in the EU, GDPR-compliant.