Common Paper
commonpaper.com
Standard business contracts written to be read, published free under CC BY
No sign-up
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Invoice, sign, calculate, register and get paid.
commonpaper.com
Standard business contracts written to be read, published free under CC BY
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
instantdomainsearch.com
Answers as you type whether a name is still available as a domain
invoice-generator.com
Fills in a clean invoice in the browser and downloads it as a PDF
invoiceninja.com
Open-source quotes and invoices you can host on your own server
pandadoc.com
Sends a document out for a legally binding electronic signature
stripe.com
Creates a checkout page for one product without building a website
waveapps.com
Invoices plus real double-entry bookkeeping for a small business, free
wise.com
Converts at the real exchange rate with the fee shown as its own line
xe.com
The exchange rate everyone quotes, live across a hundred-odd currencies
zoho.com
Free invoicing with estimates, reminders and a client portal attached
By task
Archive
Kept on record so an old bookmark still leads to an answer. Each one names the site that does the job now.
xpenser.com
Logged an expense by texting, emailing or even phoning it in
Questions
There is no single answer, which is why this page lists 13 of them with their limits stated. If you want to avoid signing up entirely, 4 of these work with no account at all.
Every site in this category sends your input to its own server to do the work. That is fine for public material; for anything containing personal data, check the on-device collection instead.
Some already have. 1 entry in this category has been retired and moved to the Archive with a working successor, so an old bookmark still leads somewhere useful.