Contractor Management Software | Estimates, Timesheets, Invoices & Job Tracking | No Subscription
Tradesman OS Pro | Complete Business Management System for Contractors & Tradespeople
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Contractor OS Pro is a professional all-in-one business management system designed for contractors, tradespeople, craftsmen, handyman businesses, and small construction companies that want to manage projects, customers, estimates, invoices, and payments from one central location.
From the first customer inquiry to the final invoice and warranty period, Contractor OS Pro helps streamline your entire workflow and reduce administrative work. Estimates, measurements, jobs, timesheets, invoices, reminders, reporting, and customer management work together in one integrated system.
The application runs entirely offline as a single HTML file directly in your browser. No installation, no subscription, no monthly fees, and no cloud dependency. Your business data remains on your own device.
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A Typical Workflow
✔ Create a customer
✔ Record measurements on-site
✔ Generate an estimate from the measurement data
✔ Convert the estimate into an active job
✔ Track labor hours and timesheets
✔ Generate professional invoices in minutes
✔ Monitor unpaid invoices and send reminders
✔ Track warranties and project completion dates
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Features Included
✔ Customer management
✔ Measurement calculator for walls, floors, ceilings, and linear measurements
✔ Estimate and quotation management
✔ Job and project tracking
✔ Timesheets and labor tracking
✔ Invoice management with professional PDF documents
✔ Payment reminder system for overdue invoices
✔ Warranty tracking and expiration alerts
✔ Services and materials catalog
✔ Revenue and business reporting
✔ Dashboard with active jobs, outstanding invoices, and revenue tracking
✔ CSV export for accountants and bookkeeping
✔ Backup and restore functionality
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Key Advantages
✔ Faster estimate creation
✔ Better visibility of projects and cash flow
✔ Professional invoices and documents
✔ Automatic tracking of unpaid invoices
✔ Warranty reminders before expiration
✔ Organized records for customers, jobs, and materials
✔ No monthly software costs
✔ Full control over your business data
✔ Works completely offline
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Why Contractors Love It
✔ Spend less time on paperwork
✔ Keep projects, customers, and invoices organized
✔ Track revenue and outstanding payments easily
✔ Manage jobs from start to finish in one system
✔ Avoid subscription fees and cloud lock-in
✔ Simple enough for small businesses, powerful enough for growing companies
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Perfect For
Construction & Building Trades
✔ General Contractors
✔ Construction Companies
✔ Remodeling Contractors
✔ Renovation Businesses
✔ Home Improvement Contractors
✔ Property Maintenance Companies
Electrical, Plumbing & Mechanical
✔ Electricians
✔ Plumbing Contractors
✔ HVAC Contractors
✔ Heating & Cooling Specialists
✔ Solar Installers
Interior & Finishing Trades
✔ Painters & Decorators
✔ Drywall Contractors
✔ Flooring Installers
✔ Tile Installers
✔ Carpet Fitters
✔ Kitchen Installers
Woodworking & Exterior Trades
✔ Carpenters
✔ Joiners
✔ Cabinet Makers
✔ Deck Builders
✔ Roofing Contractors
✔ Window & Door Installers
Property & Service Trades
✔ Handyman Businesses
✔ Property Maintenance Services
✔ Facility Maintenance Contractors
✔ Cleaning Companies
✔ Landscaping Businesses
✔ Grounds Maintenance Services
Independent Professionals
✔ Self-Employed Tradesmen
✔ Independent Craftsmen
✔ Small Contractor Teams
✔ Service Businesses Working On-Site
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Special Features
✔ 100% local — your data stays private
✔ No cloud, no tracking, no login
✔ No subscription — buy once, use forever
✔ Single-file setup
✔ Works directly in Chrome, Firefox, Safari, Edge, and other modern browsers
✔ Instant access after download
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What You Receive
* Contractor OS Pro (HTML file)
* Instant digital download
* Runs directly in your browser
* No installation required
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Important Note
All data is stored locally in your browser. Regular backups are recommended to prevent data loss.
This software is designed as a business organization and management tool and does not replace professional accounting, tax, or legal advice.
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