Common Paper
commonpaper.com
Standard business contracts written to be read, published free under CC BY
No sign-up
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instantdomainsearch.com
Answers as you type whether a name is still available as a domain.
Results appear character by character while you type, across hundreds of top-level domains, with aftermarket and expired listings shown beside the plain availability answer. It is the fastest way to discover that the name you have fallen in love with went in 2011 and now costs five figures. It is also an accredited registrar, so the results page is trying to sell you the domain as well as check it.
AltFTool does this too
If you would rather not leave the site, Domain Checker covers the same job here — free, no account, and it runs in your browser.
Open Domain CheckerQuestions
Works the moment the page loads. No account, no email, no trial. It is a registrar as well as a checker, so every result doubles as a sales page.
Yes. Instant Domain Search sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
It is a registrar as well as a checker, so every result doubles as a sales page.
Alternatives
Same category or same task, ordered by how closely they overlap.
commonpaper.com
Standard business contracts written to be read, published free under CC BY
invoice-generator.com
Fills in a clean invoice in the browser and downloads it as a PDF
xe.com
The exchange rate everyone quotes, live across a hundred-odd currencies
expensify.com
Photograph a receipt and it reads the amount, date and merchant off it
forms.google.com
Builds a form in a minute and drops every answer into a spreadsheet
hubspot.com
A free CRM that remembers every email and call against a contact