Square Invoices alternatives · Accounting
Open-source alternatives to Square Invoices
Square Invoices is not described as open source on its own site. 7 of the 128 other accounting and invoicing tools in this directory are open source, according to their own sites.
Square Invoices has a free plan. Paid plans start at $49 per location / month, billed monthly. All of them are free or have a free plan.
7 tools · Listings checked up to Nov 13, 2026 · Where the facts come from
How each one differs from Square Invoices
- Free plan · from $72/yr
Akaunting
Open-source accounting you can host yourself or use in the cloud
- Akaunting starts at $72 per year, self-hosted. Square Invoices starts at $49 per location / month, billed monthly.
- Only Square Invoices lists iOS and Android apps.
- Akaunting is open source and self-hostable, according to its own site.
- Akaunting also covers bookkeeping and expense tracking.
- Free plan · from $31.10/mo
Odoo
Business app suite whose Accounting app is free when used on its own
- Odoo starts at $31.10 per user / month, billed annually, after $24.90 for the first 12 months. Square Invoices starts at $49 per location / month, billed monthly.
- Odoo is open source and self-hostable, according to its own site.
- Odoo also covers bookkeeping and expense tracking.
- Free
GnuCash
Free double-entry accounting for home and small business use
- GnuCash is free. Square Invoices starts at $49 per location / month, billed monthly.
- Only GnuCash lists Windows, macOS and Linux apps.
- Only Square Invoices lists a web app.
- Only Square Invoices lists iOS and Android apps.
- Free
Bigcapital
Open-source accounting you host yourself, with a cloud version planned
- Bigcapital is free. Square Invoices starts at $49 per location / month, billed monthly.
- Only Square Invoices lists iOS and Android apps.
- Bigcapital is open source and self-hostable, according to its own site.
- Bigcapital also covers bookkeeping and inventory.
- Free
InvoiceShelf
Open-source invoicing and expense tracking you host yourself
- InvoiceShelf is free. Square Invoices starts at $49 per location / month, billed monthly.
- Only Square Invoices lists iOS and Android apps.
- InvoiceShelf is open source and self-hostable, according to its own site.
- InvoiceShelf also covers expense tracking and quotes and estimates.
- Free
LedgerSMB
Open-source double-entry accounting and ERP you install yourself
- LedgerSMB is free. Square Invoices starts at $49 per location / month, billed monthly.
- Only Square Invoices lists iOS and Android apps.
- LedgerSMB is open source and self-hostable, according to its own site.
- LedgerSMB also covers bookkeeping, inventory and quotes and estimates.
- Free
InvoicePlane
Free self-hosted invoicing for quotes, invoices and payments
- InvoicePlane is free. Square Invoices starts at $49 per location / month, billed monthly.
- Only Square Invoices lists iOS and Android apps.
- InvoicePlane is open source and self-hostable, according to its own site.
- InvoicePlane also covers quotes and estimates.
Common questions
Is there an open-source alternative to Square Invoices?
Yes. Akaunting, Odoo, GnuCash, Bigcapital, InvoiceShelf, LedgerSMB and InvoicePlane are open source, according to their own sites.
Is Square Invoices open source?
Square Invoices is not described as open source on its own site. The listing was checked on Oct 17, 2026 against the pages it cites.
When was this checked?
Each listing shows its own date. On this page they run from Oct 17, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Square Invoices: the alternatives its listing names first, then the tools that share the most features with it.