Solo OS is a 100% free, privacy-first freelance operating system for creators, developers, and agencies. Generate proposals, invoices, watermark drafts, scopes of work, legal notices, sign-off docs, and payment reminders in minutes. Manage clients, track expenses and time. It also includes fast browser-based micro tools like PDF split/merge, image compressor, JSON formatters, Base64 utilities, hash checkers, and file converters — all running locally within the browser.

Solo OS is a scalable, zero-backend platform for the global freelance economy. By processing contracts 100% client-side, we eliminate cloud server costs to create an infinite-margin moat. Features: • Interactive Bento Proposals (clients toggle scope & pricing) • Free Draft Watermarker • Professional Invoices & SOWs • Escalation Emails & Legal Notice. • Local E-Signatures Your data never leaves your device. Use the free tools forever, or pay a tiny flat fee per premium document.