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SolidInvoice vs InvoiceShelf: catalog facts
SolidInvoice	InvoiceShelf
Freemium Free to self-host; the hosted service is a monthly subscription with a 14-day trial.	Free Free and open source under the AGPL-3.0 licence, with no per-seat fees.
Web, Self-hosted	Web, Self-hosted
Quotes, recurring invoices and automatic reminders Online payments via Stripe and PayPal	Invoices, estimates, payments and expenses in one place Recurring invoices and a customer portal
Self-hosting requires a PHP server setup Focused on invoicing rather than full accounting	You maintain the server and backups yourself The 3.x branch is an alpha preview not meant for production data
Self-hosted, Hosted service	Self-hosted
Open source	Open source
License: MIT	License: AGPL-3.0
Account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.