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VATnode.dev
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invoicely
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Free country-specific accounting tools for European professionals. VAT calculators, payroll, depreciation, invoicing and more for France, Germany, Spain, Portugal, Belgium and the Netherlands.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | eurocompta.eu | diffyn.com |
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As answered by people managing EuroCompta.eu and Diffyn.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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EU VAT validation with audit-proof VIES certificates
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Calculate exact standard & reduced VAT rates for all 27 EU member states plus the UK and Switzerland. Generate compliant PDF invoices for freelancers and cross-border B2B business instantly, entirely in your browser.
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Production-grade EU VAT validation API — VIES + national registry fallback, audit-ready consultation numbers, and company enrichment. Free plan available.
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E-VAT Calculator is a universal VAT calculation tool designed to calculate Value Added Tax for EU and non EU countries.
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invoicely is a free online invoicing platform for small businesses
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Invoice Ninja is a free, open-source solution for invoicing and billing customers.
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