Wave
waveapps.com
Invoices plus real double-entry bookkeeping for a small business, free
Free tier
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invoiceninja.com
Open-source quotes and invoices you can host on your own server.
Invoice Ninja covers quotes, invoices, recurring billing, expenses, time tracking and a client portal, and the whole application is open source, so the alternative to paying is running it yourself rather than doing without. The hosted tier is free forever for up to five clients, which is enough for a side business. Past five clients, or for custom domains and unbranded client portals, you pay or you self-host.
Questions
A genuinely usable free tier with paid plans for volume or team features. The free hosted plan stops at five clients — beyond that you pay or run it yourself.
Yes. Invoice Ninja 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.
The free hosted plan stops at five clients — beyond that you pay or run it yourself.
Alternatives
Same category or same task, ordered by how closely they overlap.
waveapps.com
Invoices plus real double-entry bookkeeping for a small business, free
zoho.com
Free invoicing with estimates, reminders and a client portal attached
expensify.com
Photograph a receipt and it reads the amount, date and merchant off it
hubspot.com
A free CRM that remembers every email and call against a contact
invoice-generator.com
Fills in a clean invoice in the browser and downloads it as a PDF
pandadoc.com
Sends a document out for a legally binding electronic signature