Open Source Tax Software.
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Open Source Java e-Invoicing library, validator and tool (Factur-X/ZUGFeRD, UNCEFACT/CII XRechnung)
Python lib for Factur-X, the e-invoicing standard for France and Germany
Create and import e-invoices with ERPNext.
AI-powered bookkeeping and tax filing automation for entrepreneurs at the heart of the European economy
Libreoffice Extension to generate PDF Factur-X invoices with Libreoffice Calc
Rust bindings and SDK for the ELSTER Rich Client (ERiC)
Model Context Protocol (MCP) server for ELSTER (German tax portal). Submit UStVA, prepare EUER/ESt, sync inbox + history via Puppeteer.
Java library helping you to handle ZUGFeRD invoices
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