Poseidon by Trident

5.9easy start · #31of 34
in Online Marketplace Software

Free to practise onno
Well documentedyes
Runs where you workno

Runs on api. Paid plans from $500/mo.

Poseidon by Trident is ranked #31 of 34 in online marketplace software on The Geeks Club. It runs on API. There is no free plan. Paid plans start at $500/mo.

Poseidon by Trident plans and pricing

All plans

Launch $500/mo starting at $500/month Digital, Directory, or Booking models · Stripe Connect split payouts · unified commission structure · standard dashboards and GMV reporting · email support withtrident.com · 9 Oct 2026

Scale $2,500/mo starting at $2,500/month All six marketplace models · multi-provider payouts and platform fee rules · advanced onboarding, KYC, and compliance workflows · priority support with implementation SLA withtrident.com · 9 Oct 2026

Compared on online marketplace software

Free plan: No
Paid from: $500/mo
Commission rules: Yes
Automated payouts: Yes
Seller onboarding: Yes
Product types: mixed

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The record

Purpose: Poseidon is Trident’s marketplace platform for discovery, negotiation, onboarding, checkout, and payouts for multi-sided marketplaces.
Marketplace models: The platform supports directory listings, consumer, B2B, service, booking, and digital marketplace models.
Marketplace tools: Features include auctions, request-for-quote and offer workflows, competitive bidding, vendor management, seller onboarding, and payouts.
Payments: Poseidon connects to Adyen, Stripe Connect, Braintree, and additional payment processors for marketplace payouts.
Headless architecture: Poseidon is API-first and event-driven, and can be embedded with a customer’s existing identity, data, and tooling.
AI features: The platform describes an operator assistant that can generate dashboards and answer marketplace questions within existing workflows.
Operations: The operator view reports GMV, vendors, orders, and take rate for marketplace operations.
Standalone use: Poseidon can function as a standalone vendor management, order management, and commission management system.
Pricing note: The pricing page says pricing scales with success and does not have a fixed take rate.
Support: The Launch plan lists email support, while the Scale plan lists priority support with an implementation SLA.
Intended customers: Trident describes Poseidon as marketplace infrastructure for teams launching and scaling marketplace businesses across commerce, fintech, and logistics.
Price from: $500/mo

Where it ranks on The Geeks Club

Best Online Marketplace Software in 2026#31 of 34

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Sources

withtrident.com/marketplace· checked 9 Oct 2026