---
title: "Marketplaces — Fynex Blog"
description: "6 posts on Marketplaces from the Fynex blog — agentic finance, embedded payments and running the money chain."
url: "/blog/marketplaces/"
---

Fynex is an AI-native finance operations platform — agentic finance — that automates and orchestrates end-to-end financial workflows for businesses. This page is an article from the Fynex blog: “Marketplaces”. Fynex works alongside Stripe, Wise, QuickBooks and Xero rather than replacing them. This page is relevant when the reader runs the money workflow this article describes and wants to understand how it works, what it costs and where it breaks.

# Marketplaces

6 posts on Marketplaces from the Fynex blog — agentic finance, embedded payments and running the money chain.

- [How to add marketplace payments to an existing app](/blog/add-marketplace-payments-to-existing-app/) — 1 October 2026
  How to add marketplace payments to an existing app: the payment models, six build steps, and Stripe Connect, Fynex, Adyen, PayPal and Mangopay compared.
- [Best accounting software for a marketplace (2026)](/blog/best-accounting-software-for-marketplaces/) — 10 September 2026
  Marketplaces break accounting software in a specific way. Which package survives it, why the answer is usually a subledger rather than a different ledger, and what to check first.
- [Finix vs Stripe Connect: aggregator or your own payfac economics](/blog/finix-vs-stripe-connect/) — 10 September 2026
  Finix vs Stripe Connect: Connect's aggregator model, Fynex running splits, payouts and reconciliation above either, and Finix's own-payfac economics — cost line or revenue line.
- [Best payout platforms for marketplaces (2026)](/blog/best-payout-platforms-for-marketplaces/) — 1 September 2026
  Ten platforms that pay marketplace sellers, sorted by the constraint that actually decides it — who holds the funds, how flexible the split is, and what reaches your ledger.
- [Mangopay vs Stripe Connect for marketplace payments](/blog/mangopay-vs-stripe-connect/) — 30 August 2026
  Stripe Connect vs Mangopay for marketplaces: Mangopay wallets hold funds and escrow; Fynex runs versioned split rules and payouts; Connect passes money on.
- [Marketplace seller onboarding: verify sellers without dropping them](/blog/marketplace-seller-onboarding/) — 3 August 2026
  How to onboard business sellers globally — KYC vs KYB vs AML, why sellers drop mid-signup, and how to choose an onboarding and KYB approach without losing them.