
aiDoks.eu
InvoiceIn
Mustang Project
E-Rechnungs-Studio.de
E-Invoice.Space
Invoice-Converter
GetInvoice
REST API for German e-invoices: generate XRechnung (UBL/CII) and ZUGFeRD from JSON, and validate XML and PDF invoices against the official KoSIT rule set, with a plain-language explanation for every business-rule finding. Validation is free.

ETL tools
Data Extractor
Data Analysis Tool
Lineage
Mockaroo
Generate Data
JSON
Analyze, extract, and generate test data from XML & JSON with advanced intelligence. Data analysis module, test data generator, and data lineage tools.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | normapi.com | nodeflip.com |
| Pricing | ||
| Company | — | Startup from Sweden · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


NormAPI generates XRechnung (UBL and CII) and ZUGFeRD invoices from JSON and validates XML and PDF invoices against the official KoSIT rule set, as a REST API and as a free browser validator without sign-up. Generated invoices are validated before they are returned, every response names the...
Nodeflip is an all-in-one workbench for anyone who wrangles XML or JSON, developers, QA engineers, data analysts, and API consumers alike. It loads even multi-megabyte zip-files containing thousands of XML/JSON-files directly in the browser, then equips you with the tools you need to understand,...
What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


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As answered by people managing NormAPI and Nodeflip.
Nodeflip's answer:
Backend & API developers, QA/test engineers, data engineers/analysts, and integration consultants who live in structured payloads and need to understand, validate, and transform them faster.
Nodeflip's answer:
Nodeflip is the only XML / JSON workbench that combines a live tree-and-grid viewer, bulk data analysis, lineage tracing, diffing, and test-data generation, all in the browser. Because every byte is processed client-side (WebAssembly), you get desktop-class speed with zero data egress, even on multi-MB or multi-thousand-file workloads.
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When comparing NormAPI and Nodeflip, you can also consider the following products.

Create, edit and view e-invoices online for free. Convert PDF to e-invoice, transform invoice XML to PDF, and generate UBL 2.1 with OCR scanning, EU VAT validation, and PEPPOL BIS 3.0 compliance.
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ETL tools is a web-based platform that provides you the advanced-level features and tools which you use to automate the process of your business and manage the huge data.
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POST any e-invoice you receive. Get canonical EN 16931 JSON, validation with fix hints, PDF, CSV and DATEV back. Nothing stored.
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Data Extractor permits to concentrate information in a scanty arrangement contained inside different records and gather the information you require in an inner organized table.
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Mustangproject is a open source library and command line tool for FacturX/ZUGFeRD, a PDF-based format for electronic invoices.
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This tool is for 2D measurement data or data prepared with 2 columns.
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