Professional Invoice, Proposal & Contract Tools for Freelancers.
Solo OS is the all-in-one operating system for freelancers. Generate ultra-premium proposals, bulletproof contracts, professional invoices, and legal documents in one workspace. Start with free tools and unlock premium exports when needed.
★★★★★ Trusted by 100+ Indian freelancers.
Save profiles once. Reuse in every document.
Local-First & Private by Design. Drafting stays in your browser, and secure checkout is used only when you choose paid unlocks.
Invoice Preview
Brand + Strategy Sprint
Win Clients
Start a Project
Protect Your Work
Recover Payment
Questions About Solo OS?
Read the website FAQ for quick answers on pricing, privacy, currencies, and workflow.
Private by Default. Flexible When You Need More.
Most drafting and previews run locally in your browser, so your working data stays with you. For paid unlocks and checkout, Solo OS securely connects only when needed and keeps the flow minimal.