While you slept, your competitor confirmed the booking you never saw.
RentalOS captures every inquiry automatically. Every customer confirmed. Every booking tracked.
Next.js 15 · Supabase · Vercel · Full source code
The problem
Sound familiar?
Inquiries lost in WhatsApp
A customer messages at midnight asking about your vehicle. By morning they've booked with your competitor. You never saw the message.
You can't delegate because there's no system
Everything lives in your head. Your staff can't confirm a booking without calling you. You're the bottleneck in your own business.
Your rentals command premium rates. Your booking process doesn't.
Your customers expect a professional response. They deserve a confirmation within seconds — not a WhatsApp voice note the next morning.
3 weeks to build what should take 3 days
Every rental client needs the same things: booking flow, admin panel, email notifications, availability calendar. You've built it before. You'll build it again.
No unified view across your locations
Your Marbella fleet is in one spreadsheet. Ibiza in another. Someone always has the wrong information. A booking gets confirmed twice.
RentalOS solves all of this.
What you get
Everything to launch in a day
See it live
Built for a real business
A car rental business in Marbella is running this exact codebase in production. Same admin panel. Same booking flow. Your branding.
Visit the demoBuilt for
Who it's for
1–5 vehicles
Solo operators
You manage everything yourself. RentalOS handles the admin so you can focus on the drives. Inquiries captured 24/7, confirmations sent automatically, no more chasing documents.
See how it works →5–20 vehicles
Growing businesses
Your team needs a system they can follow without calling you. RentalOS gives everyone a clear view of every booking, every vehicle, every customer — from any device.
Start free trial →Premium fleet
Premium fleet operators
Your fleet represents your business. A booking experience that reflects the standard you set — automatic confirmations, professional document handling, a system that earns the trust your operation deserves.
See the admin panel →Build for clients
Freelancers & agencies
Stop rebuilding the same rental system for every client. Buy once, deploy many times. Full source code, commercial licence, documented and production-ready.
Buy template — €299Multiple sites
Multi-location operators
One admin panel. All your locations. Every booking visible from anywhere. Set up once, manage everything centrally.
Contact us →Before RentalOS, we managed everything on WhatsApp and a shared spreadsheet. Now every inquiry gets a confirmation email within seconds. Our customers think we're a much bigger operation than we are.
CostaSol Car Rent
Marbella, Spain
48h
Average deployment time
0
Double bookings since launch
100%
Inquiries captured automatically
Pricing
Choose how you get started
Template
- Full source code
- Deploy yourself
- RentalOS Commercial Licence
- Single deployment included
- Free updates (git pull)
Questions
FAQ
What tech do I need?
Node.js 18+, a free Supabase account, and a free Vercel account. All free tiers are sufficient to launch and handle early traffic.
Can I resell to clients?
Yes. The commercial licence covers a single deployment. For agency/multi-client use, see the template listing for full terms.
Is there a demo?
Yes. Visit /demo to explore a live car rental business running on this exact codebase.
How long to deploy?
About 1–2 hours with the included setup guide. Fork the repo, connect Supabase and Vercel, set environment variables, push. Done.
Do you offer support?
Yes — see the Done-for-you plan. We deploy and configure everything for you, with 30 days of included support after handoff.