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Simple Invoices

simpleinvoices.org

Free plan WebSelf-hosted
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Spec score 8.1 #42 of 84 in Invoicing software

Spec sheet

What it does
Simple Invoices is a free, open-source, self-hosted web-based invoice management system for creating, managing, and sending invoices.Read 11 Oct 2026 · simpleinvoices.org
Intended users
The maker describes multi-domain use cases for SaaS platforms, multi-brand organisations, and regional offices.Read 11 Oct 2026 · simpleinvoices.org
Free plan
YesRead 19 Sep 2026 · simpleinvoices.org
Founded
2005Read 28 Sep 2026 · simpleinvoices.org
Backups
It provides SQL database backups and JSON exports for migrating data between supported database types.Read 11 Oct 2026 · simpleinvoices.org
Client portal
YesRead 19 Sep 2026 · simpleinvoices.org
Currencies
It includes 40+ preset currencies plus custom currencies, with locale-aware formatting.Read 11 Oct 2026 · simpleinvoices.org
Deployment and databases
It can be installed with Docker or manually and supports MySQL, MariaDB, PostgreSQL, or SQLite.Read 11 Oct 2026 · simpleinvoices.org
Invoice features
It supports itemised or total-style invoices, customer and biller records, payment tracking, recurring invoices, PDFs, email invoices, and reports.Read 11 Oct 2026 · simpleinvoices.org
Languages
It supports 41+ languages with per-invoice language settings.Read 11 Oct 2026 · simpleinvoices.org
Mobile access
It runs in a browser and its responsive design works on desktop, tablet, and phone without an app installation.Read 11 Oct 2026 · simpleinvoices.org
Multi-currency invoicing
YesRead 19 Sep 2026 · simpleinvoices.org
Multi-domain use
One installation can run multiple isolated invoice workspaces, with each domain having its own records, settings, users, themes, and email configuration.Read 11 Oct 2026 · simpleinvoices.org
Online payments
YesRead 19 Sep 2026 · simpleinvoices.org
Payment integrations
The listed online payment gateways include Stripe, PayPal Commerce, Mollie, Authorize.net, eWay Rapid, Payments Gateway, Ko-fi, Coinbase Commerce, and Adyen.Read 11 Oct 2026 · simpleinvoices.org
Project history
The maker's timeline lists 2005 as the year of the first release.Read 11 Oct 2026 · simpleinvoices.org
Recurring billing
Recurring invoices can be scheduled daily, weekly, monthly, or yearly, and generated by a cron job or manual trigger.Read 11 Oct 2026 · simpleinvoices.org
Recurring invoices
YesRead 19 Sep 2026 · simpleinvoices.org
Security configuration
Payment gateway secrets can be encrypted using the SI_GATEWAY_SECRETS_KEY configuration value.Read 11 Oct 2026 · simpleinvoices.org
Support and contributions
The project welcomes community support and accepts bug reports, issues, pull requests, and discussions on its listed development platforms.Read 11 Oct 2026 · simpleinvoices.org

Plans and prices

Simple Invoices Free GPLv3 · no license fees · no per-user charges Read 11 Oct 2026 · simpleinvoices.org

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