
sevDesk
wISO
FinancaPlus
Fingage
Accounting and tax software for German e-commerce entrepreneurs that handles EÜR, VAT returns, and receipt management in one place.

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 | finanzflux.com | diffyn.com |
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| Company | Startup from Germany · 1 - 9 employees · 2026 | — |
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In their own words, as submitted to SaaSHub.


FinanzFlux is a German-language accounting platform built specifically for e-commerce self-employed and small business owners. It covers the full accounting workflow: income-surplus accounting (EÜR), VAT pre-returns (UStVA), transaction management, and document handling with automatic receipt...
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What each product offers, as listed by its team.


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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
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As answered by people managing FinanzFlux 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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Easy-to-use cloud accounting software made for small businesses to large enterprises and their accountants.
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A simple invoicing tool with inbuilt collection & tax filing
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