Five single-file apps for clients, contracts, invoicing, time and cash. Each runs entirely in your browser — nothing is uploaded, ever. Pay once, own forever.
Each works standalone. They share a CSV format, so together they cover your whole workflow.
Win the client, agree the terms, bill it, do the work, manage the money — all offline, all one-time purchases.
The anti-SaaS pitch, in three lines.
Everything is stored locally in your browser and never uploaded. No server means nothing to breach, leak, or hold hostage.
No monthly fee for a tool you use a few times a week. Buy it, own it, use it forever — even offline on a flight.
One small HTML file, plus CSV export. Move it between computers, back it up, keep it running long after any cloud app would shut down.
Free, practical reading — and honest "is there a cheaper way?" comparisons.
More free tools: PayPal/Stripe fee calc · Deposit/milestone calc · Markup/margin calc · Sales tax/VAT calc · Break-even/runway calc · Retainer calc · Writing rate calc · Late-fee calc · Hourly↔Salary · Quote builder · Due-date · Invoice # · Tax estimator · Project checklist
How to write an invoice, write a contract, payment terms, track expenses, contract checklist, billable hours, tax set-aside and sales pipeline. Plus: contract templates.
All articles →Offline, own-it takes on Toggl, Harvest, Clockify, FreshBooks, Wave, Zoho, Invoice Ninja, Xero, FreeAgent, Pipedrive, Bonsai, HoneyBook, Dubsado, Indy, AND CO, Moxie, Plutio and QuickBooks. · FreshBooks vs Wave · FreshBooks vs QuickBooks · Bonsai vs HoneyBook.
Best free freelance tools 2026 →Five focused tools you own offline instead of one cloud subscription you rent. Your data never leaves your computer.