One HTML File

Free working apps, each in a single HTML file you can download, run offline, and keep with no account.

Freelance rate calculator

Enter your living costs, business expenses, fees, taxes, and billable hours to find the hourly, daily, and weekly rate your work needs.

freelanceratecalculator.com

Keep dated Markdown notes on ruled paper, search across entries as you type, filter by tag, and export or import Markdown whenever you want.

journal.hyperclay.com

Split projects into lists and cards with checklists, due dates, colored labels, file attachments, comments, and instant search.

kanban.hyperclay.com