About DevKit
DevKit is a small set of 100 text and developer utilities that run entirely in your browser.
Free, and there is nothing to join
Every tool is free to use. There is no sign-up, no login, no trial and nothing to install — open a page and use it. You never hand over an email address, because there is nowhere on this site to enter one.
The work happens on your device
Each tool is an ordinary static page with a small amount of JavaScript. Whatever you paste — a JSON payload, a token, a draft you are counting words in — is processed on your own device, inside the page you already loaded. It is not uploaded, stored or logged anywhere. If you want the specifics, including the one cookie the site sets, see Privacy.
One page per tool
Each tool gets its own page and its own address, so you can bookmark the one you use often or link a colleague straight to it. See all tools.
Who makes it
DevKit is built by Quizuncle. Its sibling site ToolHub carries the calculators and generators — EMI with prepayments, percentage, aspect ratio, date difference, password and tip — under the same rules: free, no account, and nothing leaves your browser.