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Open-source repos for invoicing

33 repos tagged Invoicing, sorted by GitHub stars. Add filters from the other category types to narrow the list.

33repos tagged Invoicing

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  1. odoo/odoo

    Odoo community edition, a suite of business apps including accounting, sales and e-commerce.

    Accounting, Inventory, Storefronts, Web, Docker, Finance, Operations, B2B services, Retail, Self hosters

    55.5k starsOtherUpdated 3 Nov 2026

  2. frappe/erpnext

    Full ERP covering accounting, inventory, sales, purchasing and manufacturing.

    Accounting, Inventory, CRM, Web, Docker, Finance, Operations, Manufacturing, Retail, Self hosters

    40.9k starsGPL-3.0Updated 3 Nov 2026

  3. getlago/lago

    Metering and usage-based billing engine that turns events into invoices.

    Subscription billing, Payments, Web, Stripe, Finance, Engineering, SaaS, Finance and fintech

    10.8k starsAGPL-3.0Updated 3 Nov 2026

  4. invoiceninja/invoiceninja

    Invoicing, quotes, expenses and time tracking with a client portal and online payments.

    Payments, Web, Finance, B2B services, Agencies, Solo founders

    10.5k starsOtherUpdated 2 Nov 2026

  5. akaunting/akaunting

    Online accounting for small businesses with invoices, expenses, banking and an app store.

    Accounting, Web, Finance, B2B services, Local business, Self hosters

    10.3k starsOtherUpdated 3 Nov 2026

  6. solidtime-io/solidtime

    Modern time tracking app for freelancers and agencies with projects, clients and billable rates.

    Project management, Web, Docker, Operations, Finance, Agencies, Self hosters

    9.1k starsAGPL-3.0Updated 2 Nov 2026

  7. idurar/idurar-erp-crm

    MERN-stack ERP and CRM for invoices, quotes, payments and customers.

    CRM, Web, Finance, Sales, B2B services, Local business, Self hosters

    8.9k starsAGPL-3.0Updated 15 Aug 2026

  8. ever-co/ever-gauzy

    Business management platform with HRM, time tracking, invoicing and CRM for agencies and studios.

    Project management, CRM, Web, Docker, HR, Operations, Agencies, Self hosters

    8.7k starsAGPL-3.0Updated 3 Nov 2026

  9. crater-invoice-inc/crater

    Laravel and Vue app for invoices, estimates, expenses and payments for small firms.

    Web, Finance, B2B services, Solo founders

    8.4k starsAGPL-3.0Updated 10 Aug 2024

  10. btcpayserver/btcpayserver

    Self-hosted Bitcoin payment processor for accepting crypto in stores and invoices.

    Payments, Web, Docker, Finance, Crypto and web3, E-commerce, Self hosters

    7.9k starsMITUpdated 2 Nov 2026

  11. Dolibarr/dolibarr

    Modular ERP and CRM for small firms covering invoices, stock, HR and accounting.

    Accounting, CRM, Inventory, Web, Docker, Finance, Operations, B2B services, Local business, Self hosters

    7.8k starsGPL-3.0Updated 3 Nov 2026

  12. flexprice/flexprice

    Usage-based pricing and billing backend for metering, credits and invoices.

    Subscription billing, Web, Finance, Engineering, SaaS

    6.9k starsAGPL-3.0Updated 3 Nov 2026

  13. al1abb/invoify

    Next.js web app that generates invoice PDFs from a form, with templates and export.

    Web, Finance, B2B services, Solo founders

    6.4k starsMITUpdated 24 Aug 2026

  14. killbill/killbill

    Java subscription billing and payments platform with a plugin system.

    Subscription billing, Payments, Web, Finance, Engineering, SaaS, Finance and fintech

    5.8k starsApache-2.0Updated 29 Oct 2026

  15. openemr/openemr

    Electronic health records and practice management for clinics, with scheduling, billing and e-prescribing.

    Health records, Booking, Web, Docker, Operations, Healthcare, Self hosters

    5.6k starsGPL-3.0Updated 3 Nov 2026

  16. kimai/kimai

    Time tracker for freelancers and teams with timesheets, budgets, invoices and exports.

    Project management, Web, Docker, Operations, Finance, Agencies, Self hosters

    5.1k starsAGPL-3.0Updated 3 Nov 2026

  17. opensourcepos/opensourcepos

    Web point-of-sale system with inventory, sales, receipts and reporting.

    Inventory, Payments, Point of sale, Web, Docker, Operations, Sales, Retail, Hospitality and restaurants, Self hosters

    4.5k starsOtherUpdated 2 Nov 2026

  18. Gnucash/gnucash

    Desktop double-entry accounting app for households and small businesses.

    Accounting, Finance, Finance and fintech, Local business

    4.4k starsOtherUpdated 3 Nov 2026

  19. InvoicePlane/InvoicePlane

    Self-hosted app for quotes, invoices, clients and payment records.

    Web, Finance, B2B services, Self hosters

    3.3k starsOtherUpdated 31 Oct 2026

  20. stripe/ai

    Stripe's agent toolkit and MCP server for creating payments, invoices and customers from AI agents.

    Payments, AI agents, Stripe, Finance, Engineering, SaaS, E-commerce

    2k starsMITUpdated 2 Nov 2026

  21. InvoiceShelf/InvoiceShelf

    Self-hosted invoicing and expense app, an active continuation of Crater.

    Web, Docker, Finance, B2B services, Self hosters, Solo founders

    1.9k starsAGPL-3.0Updated 28 Oct 2026

  22. FOSSBilling/FOSSBilling

    Billing and client management for hosting and service businesses.

    Subscription billing, CRM, Web, Finance, Customer support, B2B services, SaaS, Self hosters

    1.7k starsApache-2.0Updated 2 Nov 2026

  23. andrewdwallo/erpsaas

    Laravel accounting app with double-entry books, invoices, bills and reports.

    Accounting, Web, Finance, B2B services

    1.5k starsMITUpdated 5 Mar 2026

  24. meteroid-oss/meteroid

    Billing platform for SaaS with pricing plans, usage metering and invoicing.

    Subscription billing, Web, Finance, Engineering, SaaS

    1.4k starsAGPL-3.0Updated 30 Oct 2026

  25. microrealestate/microrealestate

    Self-hosted app for landlords to manage properties, tenants, leases, rent and receipts.

    Property management, Docker, Web, Operations, Finance, Real estate, Self hosters

    1.2k starsOtherUpdated 25 Oct 2026

  26. VladSez/easy-invoice-pdf

    Browser-based invoice generator with live PDF preview and no signup.

    Web, Finance, B2B services, Solo founders

    1.1k starsAGPL-3.0Updated 4 Nov 2026

  27. itflow-org/itflow

    Documentation, ticketing and billing system built for managed service providers.

    Helpdesk, Docs and wiki, Web, Customer support, IT and security, B2B services, Self hosters

    1k starsAGPL-3.0Updated 1 Nov 2026

  28. SolidInvoice/SolidInvoice

    Self-hosted invoicing and quoting app for freelancers and small businesses.

    Web, Finance, B2B services, Self hosters, Solo founders

    980 starsMITUpdated 3 Nov 2026

  29. pdovhomilja/nextcrm-app

    Next.js CRM covering accounts, contacts, opportunities, projects, invoices and documents for small teams.

    CRM, Web, Vercel, Sales, SaaS, B2B services, Solo founders

    736 starsMITUpdated 3 Nov 2026

  30. francoisjacquet/rosariosis

    Student information system for K-12 schools covering grades, attendance, billing and scheduling.

    Internal tools, Web, Operations, Finance, Education

    649 starsGPL-2.0Updated 28 Oct 2026

  31. earthians/marley

    Health information system on Frappe/ERPNext covering patients, appointments, labs and billing.

    Health records, Booking, Web, Operations, Finance, Healthcare

    555 starsGPL-3.0Updated 1 Nov 2026

  32. open-condo-software/condo

    Property management SaaS for residential buildings covering tickets, residents, payments and invoices.

    Property management, Helpdesk, Web, Operations, Customer support, Real estate

    429 starsMITUpdated 3 Nov 2026

  33. invopop/gobl

    Go library and JSON schema for structured e-invoices with a global tax database.

    Tax compliance, Finance, Engineering, Finance and fintech, B2B services

    317 starsApache-2.0Updated 30 Oct 2026