Who makes these tools, why they are free, and what they are built on. No account, no tracking, no advertisements, and the code is public.
Toolbox is made by Frappe, and it is free. There is no account, no sign-up, and no payment. Nothing you type into a tool is stored on a server, and most tools never send it anywhere at all.
It exists for a plain reason, and saying it is better than pretending otherwise. Frappe builds software for businesses, and most people have never heard of us. A set of tools that are genuinely useful is a way to meet a few of them. If a converter or a calculator does its job today, some small number of the people who used it will look at what else we make. That is the whole strategy.
That gives us one rule about this site, which is worth writing down:
Frappe, a software company. We are best known for ERPNext, an open source system that businesses run their accounting, stock, manufacturing and payroll on.
Yes, and it costs almost nothing to run, which is what makes that promise safe. The tools compute in your browser. The four datasets are files that ship with the site. Only the currency rates call anything at all.
No. There is no analytics script, no advertising tag and no cookie banner, because there is nothing to consent to. Nothing you type is recorded anywhere, and your settings stay in the browser tab you are using and go when it closes.
Two things are kept for longer, and neither says anything about you. The light or dark theme, so a returning visitor is not shown a white flash. And the last table of currency reference rates, which is a public list of numbers and the only thing that lets the converter work with no connection.
Yes. Toolbox is on GitHub under the GNU Affero General Public License v3. The tools, the datasets and the words on these pages are all in that repository.
The tools, yes. A dataset carries its own licence, and each one is named on the data sources page along with the terms it came under. Two of them ask for attribution.
Open an issue on GitHub. A calculation that disagrees with the tool, a definition that reads oddly, a dataset that has gone stale: all of it is worth reporting, and the repository is the place.
Toolbox is built on the same things Frappe builds everything on. The Frappe Framework serves it and holds the datasets. The interface uses Frappe UI, the component library our own products use. It runs on Frappe Cloud, which is how we host Frappe applications for other people too.
So this site is a small, honest sample of the stack. It was built by one team in a few weeks, which is roughly the point.
Frappe works in a way that is unusual enough to be worth reading about, whether or not you ever use anything we make. Our culture and our values are written down in public, including the parts that cost us something.