Create an invoice, share a secure link, get paid — that's the entire workflow, no client portals or account registrations required. Invio distills billing into its absolute minimum viable surface while still producing legally compliant EU electronic invoices in Factur-X/ZUGFeRD 2.2 BASIC, UBL 2.1, and Italian FatturaPA formats, all embedded as XML attachments inside WeasyPrint-rendered PDFs. The Deno 2 backend uses Hono v4 for HTTP routing with SQLite persistence, while the SvelteKit 2 frontend styled with Tailwind CSS v4 and DaisyUI v5 delivers a responsive interface that stays out of your way. The team access system includes a permission matrix, TOTP-based two-factor authentication, and OIDC integration with configurable auto-provisioning — drop it into existing identity infrastructure without manual user management. Preset products let you build invoices from reusable catalog items. A change history log tracks every modification for audit purposes. Rate limiting protects the API behind reverse proxies. The entire stack ships as a single multi-stage Docker image containing Deno, Bun, Node, WeasyPrint, and all required font packages — zero external service dependencies beyond the container itself. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Unlicense licensed.

SolidInvoice ships a complete billing platform as a single FrankenPHP binary — no separate PHP installation, no web server configuration, just one executable that delivers quote-to-invoice conversion, automated recurring billing, Stripe and PayPal payment processing, multi-currency precision arithmetic, and eight render-ready PDF templates out of the box. Maintained since 2012 across 63 releases with 30 contributors, the Symfony 7 and PHP 8.4 backend provides quote creation with one-click conversion to invoices, recurring billing with configurable frequency schedules, and online payment processing through Payum supporting Stripe, PayPal, and additional gateways. Multi-currency support uses real Money objects for precision arithmetic, while multi-tax support handles invoice-level and line-item tax rates with automatic calculation. Client management stores contacts, multiple addresses with map integration, credit balances, and complete quote and invoice history per client. The redesigned Tabler-based UI features a dashboard with hero statistics, ChartJS revenue trend visualization, attention-required alerts for overdue and draft invoices, quick actions, and a recent activity timeline. A RESTful API enables integrations with external systems. Multi-channel notifications deliver alerts via email, SMS, and webhooks. Google OAuth and two-factor authentication secure access. Grid export and full company data export support backup and migration. Deploy using Docker, Homebrew, the standalone FrankenPHP binary, or from source. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.

Invoicerr nails the exact billing sequence freelancers actually use: draft a quote, send it to the client, collect a legally-binding electronic signature via a secure browser link, convert the approved quote into an invoice, and generate a branded PDF — no DocuSign account, no external signing service, no enterprise complexity. The React frontend with NestJS backend uses Prisma ORM with your choice of SQLite for instant local setup or PostgreSQL for production workloads. Quotes and invoices are first-class objects with independent status tracking — unread, sent, viewed, signed for quotes; paid for invoices — not a single form with a label swap. The e-signature system generates secure-token signing links that clients open in their browser to review and sign documents without needing any account or external service. PDF generation renders quotes, invoices, and receipts with your company logo, name, VAT number, colors, and custom email templates so documents reflect your brand identity rather than the software's defaults. Authentication supports JWT tokens or OIDC providers stored in cookies. The REST API backend enables future integrations with mobile and desktop clients. A plugin system with community-made features and outgoing webhooks extends functionality without forking core code. International-friendly with customizable currencies. Deploy with Docker Compose using the prebuilt image from GitHub Container Registry. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.

Named after the Bosnian word for invoice (račun) with a raccoon twist, Rachoon provides a clean self-hosted invoicing platform that handles the complete billing cycle from quotation to payment reconciliation without touching a third-party SaaS subscription. The Nuxt.js frontend serves a dashboard that surfaces revenue totals, pending balances, overdue items, and client statistics at a glance, while the AdonisJS backend manages all business logic against a PostgreSQL 16 database with TypeScript throughout the full stack. Invoice templates use Nunjucks with full HTML and CSS control—including conditional logic, loops, and custom formatting—so the rendered PDFs actually match your design intent. This is possible because Rachoon delegates PDF generation to Gotenberg, which renders invoices through headless Chrome rather than a restricted drawing API, producing output that faithfully preserves complex layouts, web fonts, and CSS grid. Client records stay organized and searchable, each linked to their invoice and quotation history with payment status tracking across pending, paid, and overdue states. Multi-currency billing with flexible tax configuration supports international operations, and all data remains on your own infrastructure. The monorepo is managed by Turborepo with a CI pipeline covering linting, PostgreSQL integration tests, build verification, and multi-platform Docker image creation for both amd64 and arm64 architectures. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.