Best Self Hosted Alternatives to Invoice2go

Akaunting is an online accounting application for small businesses and freelancers, designed to manage day-to-day bookkeeping from a web interface. It provides core finance workflows like invoicing, expense tracking, and cash flow visibility, with an extensible modular architecture.

Key Features

• Create and send professional invoices and track payments
• Track expenses and categorize income/expense transactions
• Cash flow overview to monitor business finances
• Modular app system with an integrated app marketplace for extensions
• RESTful API for integrations and automation
• Multi-language interface supported by community translations

Use Cases

• Freelancers issuing invoices and tracking client payments
• Small businesses managing expenses, categories, and basic bookkeeping
• Organizations extending accounting features via modules and integrations

Limitations and Considerations

• Some advanced accounting/ERP functions may require additional apps/modules
• License is BSL, which may impose restrictions for some commercial use cases

Akaunting is a practical choice for teams that want a web-based accounting system they can run on their own infrastructure. Its extensibility and broad language support make it suitable for a wide range of small-business workflows.

Invoice Ninja is a source-available invoicing and billing application for small businesses and freelancers. It helps you create invoices and quotes, accept online payments, manage clients, and track work with projects and time entries.

Key Features

• Create and send invoices, quotes, and credit notes with customizable templates and branding
• Client portal for viewing invoices, making payments, and accessing documents
• Online payment integrations and payment reminders for due and overdue invoices
• Expense tracking plus basic business workflow around clients and items/products
• Projects and time tracking to bill hours and manage ongoing client work
• REST API for integrating invoicing and client data into other systems

Use Cases

• Freelancers generating professional invoices and accepting online payments
• Small businesses managing quotes, recurring invoices, and client communications
• Agencies tracking time and projects and converting work logs into invoices

Limitations and Considerations

• Source-available under the Elastic License rather than a permissive OSI license
• Some features (for example, white-labeling) may require a paid license

Invoice Ninja provides a comprehensive invoicing workflow with a client-facing portal and integrations, making it suitable for running billing and client management in-house. It’s a strong fit when you need both invoicing and time/project billing in a single system.

Bigcapital is an open-source accounting and inventory application designed for small and medium businesses. It helps organize transactions using double-entry bookkeeping and provides financial statements and reporting to support day-to-day decision-making.

Key Features

• Double-entry accounting with journals and account categorization
• Sales and purchase invoicing, including recurring invoices
• Customer and vendor payment tracking
• Expense tracking and expense accounting workflows
• Inventory tracking with automatic stock adjustments on buy/sell
• Financial statements and business reports
• Multi-currency accounting with exchange-rate conversion
• Organization collaboration with role-based permissions for accountants/bookkeepers
• API-first “headless accounting” for integrating with other systems

Use Cases

• Replace or complement proprietary small-business accounting tools
• Track invoices, bills, expenses, and inventory for a growing business
• Integrate accounting and reporting into an existing product via API

Limitations and Considerations

• Some advanced features expected in mature ERP/accounting suites may be incomplete or evolve over time

Bigcapital is a solid choice for teams that want an open-source, API-capable accounting system with invoicing, expenses, inventory, and reporting in one place. It is particularly suitable for SMBs that need control over deployment and data while keeping a modern web-based workflow.

InvoicePlane is a self-hosted, open source web application for managing your billing workflow, from quotes to invoices and payments. It also includes CRM-like client management and configurable templates for email and PDF output.

Key Features

• Create, send, and manage quotes and invoices
• Track payments and invoice statuses, with reminders
• Client management with contact details, notes, and custom fields
• Customizable themes and configurable email/PDF templates
• Reporting to review billing and financial activity
• Multi-language interface with community translations
• Optional integrations for online payments (for example PayPal and Stripe)
• Support for generating eInvoices (version-dependent)

Use Cases

• Freelancers and small businesses issuing recurring or one-off invoices
• Teams needing a lightweight billing tool with basic customer records
• Organizations that want an on-premise invoicing system with customizable templates

Limitations and Considerations

• Primarily aimed at small to medium billing workflows; advanced accounting features are limited
• Payment provider options depend on available gateways and configuration

InvoicePlane provides a practical invoicing and client-management workflow with a straightforward web UI and flexible customization. It’s a good fit for users who want control over billing data and a simple, extensible PHP-based application.

InvoiceShelf is an open-source web and mobile application for creating professional invoices and estimates, tracking expenses and payments, and automating common billing workflows. It provides a web UI plus mobile app sources and a REST API for integrations.

Key Features

• Create, send and manage invoices and estimates with configurable PDF templates and a template generator/CLI.
• Expense and payment tracking with attachments and categories, plus dashboard stats for revenue and cashflow.
• RESTful API (token-based) covering customers, invoices, expenses, recurring invoices and dashboard endpoints for integrations and automation.
• Recurring invoices support (API endpoints for scheduling and frequency control) and custom fields for extended data on models.
• Customizable PDF templates (blade-based) with a make:template command to preserve templates during upgrades.
• Installer and deployment options including manual install guides and Docker Compose instructions; configurable database drivers (SQLite used as default in examples).
• Mobile app sources provided (React Native) for iOS/Android and community-provided extensions and modules.

Use Cases

• Freelancers and small businesses needing a self-hosted invoicing and expense tracking solution.
• Teams integrating invoicing data with other systems via the provided REST API (automation, accounting sync, webhooks).
• Developers customizing invoice PDF templates, adding custom fields, or extending functionality via modules and open-source contributions.

Limitations and Considerations

• Hosted mobile apps are not universally available; mobile app source code exists but official app availability is listed as "coming soon" in project notes.
• Built-in payment processing is not bundled by default; payment integrations (e.g., Stripe) are listed on the roadmap rather than fully integrated out-of-the-box.
• Installation requires familiarity with PHP/Laravel environment requirements (PHP 8.2+ and typical PHP extensions) or Docker tooling for easier deployment.

InvoiceShelf is a practical open-source alternative for self-hosted invoicing, with an extensible codebase and API-first design that supports customization and integrations. It is maintained as an AGPL-licensed project with community contributions and documentation for installation and developer workflows.

Rachoon is a modern, self-hosted invoicing platform for freelancers and small businesses that want full control over billing data. It helps you create, manage, and track invoices and offers, and produce professional PDF documents.

Key Features

• Create and manage invoices and quotations/offers
• Client management with searchable customer details
• Payment tracking, balances, and overdue invoice status
• Customizable document templates and branding
• Multi-currency billing with tax support
• PDF export via an external PDF rendering service
• Dashboard overview of revenue, pending payments, and client stats

Use Cases

• Freelancers creating branded invoices and tracking paid vs. overdue items
• Small businesses managing clients, offers, and multi-currency invoicing
• Teams running invoicing in a private environment for data-control needs

Limitations and Considerations

• PDF generation relies on an additional service (Gotenberg) that must be deployed and maintained
• Requires a PostgreSQL database for persistence

Rachoon provides a clear, focused workflow for invoicing, client tracking, and document export while remaining deployable with common container tooling. It is well-suited for individuals or small organizations that want a modern invoicing UI without relying on third-party billing platforms.

SolidInvoice is an open-source invoicing application built to help freelancers and small businesses manage billing operations. It centralizes clients, quotes, and invoices, and supports online payments and integrations via an API.

Key Features

• Client and contact management
• Create, send, and manage quotes and invoices
• Taxes and discounts handling
• Online payment acceptance (gateway support)
• RESTful API for integrations with other systems
• Notifications via multiple channels (for example email and SMS)
• Multi-currency support and team collaboration

Use Cases

• Freelancers issuing quotes and invoices and tracking payments
• Small businesses managing recurring billing and payment reminders
• Integrating invoicing data with external tools through the REST API

Limitations and Considerations

• Requires a modern PHP runtime (project targets PHP 8.4+)

SolidInvoice is a practical choice for organizations that want a clean, extensible billing workflow they can run on their own infrastructure. It fits teams that need quotes, invoicing, and payment collection in one place, with automation and API access for integration.

Invio is a minimalist, self-hosted invoicing application focused on quickly creating invoices and sharing them with clients without unnecessary CRM or project-management features. It is designed to be fast, transparent, and easy to run while keeping your billing data under your control.

Key Features

• Create and manage invoices with a streamlined, low-configuration workflow
• Share invoices via secure public links so clients can view without accounts
• SQLite-backed storage for a simple, lightweight deployment
• JWT-based authentication for the admin session with configurable TTL
• Built-in rate limiting to help protect login endpoints from brute-force attempts
• Security headers support (including optional HSTS) for safer web deployments

Use Cases

• Freelancers who want a lightweight invoicing tool they fully control
• Small businesses that need a simple invoice workflow without bundled CRM features
• Privacy-conscious teams that prefer local ownership and exportable billing data

Limitations and Considerations

• Built to stay minimalist, so it may not suit complex accounting workflows or full ERP needs

Invio is a practical choice if you want a fast, no-bloat invoicing tool with sensible security defaults and a simple storage layer. Its focus on public invoice sharing and a straightforward workflow makes it well-suited for individuals and small teams.

Invoicerr is a simple, open-source invoicing application designed for freelancers to manage their quotes and invoices efficiently. It provides a clean interface for creating, sending, and tracking quotes and invoices — so you get paid faster, with less hassle.

Key Features

• Create and manage invoices
• Create and manage quotes (convertible to invoices)
• Manage clients and their contact details
• Track status of quotes and invoices (signed, paid, unread, etc.)
• Built-in quote signing system with secure tokens
• Generate and send quote/invoice emails directly from the app
• Generate clean PDF documents (quotes, invoices, receipts, and more)
• Custom brand identity: logo, company name, VAT, and more
• Authentication via JWT or OIDC (stored in cookies)
• International-friendly: Default English UI, customizable currencies
• SQLite database for quick local setup
• Docker & docker-compose ready for self-hosting
• Built with modern stack: React, NestJS, Prisma, SQLite/PostgreSQL
• REST API backend, ready for future integrations (mobile & desktop apps)
• Plugin system for community-made features

Use Cases

• Freelancers and solo operators issue invoices and track payments for multiple clients
• Small teams convert quotes to invoices, send via email, and monitor statuses
• Agencies manage client billing and generate PDFs for records and audits

Limitations and Considerations

• Docker images are built for linux/amd64 and linux/arm64/v8; 32-bit ARM architectures are not supported due to Prisma requirements
• Local development and self-hosting require some technical setup (Docker or Node.js environment) to run

Conclusion

Invoicerr provides a focused, self-hosted invoicing solution with quotes, invoices, client management, and secure signatures. Its modern stack (React/NestJS/Prisma) and Docker-based deployment make it suitable for freelancers and small teams who want control over their data and workflows.

CSA Admin is an open-source web application designed to manage Community Supported Agriculture (CSA / ACP / Solawi) organizations. It centralizes membership, delivery scheduling, invoicing and member communications for small-to-medium CSA operations.

Key Features

• Member and subscription management (registration forms, waiting lists, trial baskets, support members, add-ons).
• Advanced delivery schedule management (multiple frequencies, special needs, automatic absence deductions).
• Automated billing (QR-reference invoices, payment statement import via EBICS, reminders) and renewal workflows.
• Built-in online shop for add-on products with stock management.
• Activity and participation management (member shifts, registrations, validations).
• Multilingual interface and integrated email/newsletter system.

(csa-admin.org)

Use Cases

• Associations or cooperatives managing member subscriptions, recurring deliveries and basket allocation.
• Automating invoicing, bank statement reconciliation and end-of-year renewals to reduce manual billing work.
• Operating an online member shop and coordinating member participation (field work, packing days).

(csa-admin.org)

Limitations and Considerations

• The repository indicates the default setup uses SQLite and SolidQueue/ActiveJob for async jobs; this configuration may limit horizontal scaling without additional configuration or switching to a server-grade RDBMS and background queue. (github.com)
• There is no public live demo site; demos are provided by request through the project website/contact. (csa-admin.org)

CSA Admin is a focused, feature-rich tool for managing CSA operations with multilingual support and built-in invoicing and shop functionality. It is open-source and maintained to support the specific workflows of community-supported agriculture organizations.