Best Shopping Cart & Checkout Platforms for Marketing Agencies

A self-hosted, multi-vendor e-commerce platform with a one-time lifetime license fee.

Editor's takeCS-Cart bundles over 500 marketplace features natively, including separate vendor panels and payout systems, instead of relying on plugins. Its lifetime license charges once with no ongoing transaction fees, a rare structure in e-commerce software. Software updates and support require a paid subscription after the first year, and the backend has a learning curve.

Ecommerce widget embedding into any website with zero transaction fees and social selling tools.

Editor's takeEcwid charges 0% transaction fees on every plan, a real advantage for merchants adding commerce to an existing site. That value took a hit in 2025, when the forever-free plan was discontinued for a paid Starter tier. Phone support also stays gated, available only as a callback on Business and Unlimited plans.

Code-free ecommerce store builder that syncs purchase data straight into Mailchimp's marketing automation.

Editor's takeMailchimp's shopping cart wins on integration, since purchase data flows natively into email automations, abandoned cart flows and product recommendations without third-party plugins. That makes it a strong fit for existing Mailchimp users running a simple store. The cost model is the catch, since every plan carries a transaction fee on top of payment processing, starting at 2% on the free tier and dropping to 0.5% only on the $29/month Plus plan.

Checkout platform built into an all-in-one marketing suite, with one-click upsells and behavioral tagging.

Editor's takeKartra ties checkout directly to its marketing automation, tagging buyers by what they purchase to trigger specific follow-up sequences immediately. The platform has processed over $1.5 billion in creator sales across 60,000 customers, and it is PCI-DSS audited annually. The Essentials plan keeps costs low but charges a 5% transaction fee and caps sellers at one product, and mobile wallets like Apple Pay only work through Stripe Connect.

A checkout platform for creators, built around one-click upsells, order bumps, and zero platform transaction fees.

Editor's takeSamCart built its checkout around raising average order value, and its data shows one-click upsells alone increase AOV by 68%. The platform charges 0% transaction fees beyond standard processor costs, and includes unlimited courses and students. Pricing scales with monthly revenue instead of staying fixed, climbing from $79 a month at $3K in sales to $109 at $4K, and it has no native email marketing automation.

Headless shopping cart that adds ecommerce to any website using a JavaScript snippet, no product database required.

Editor's takeSnipcart skips a product database entirely, letting developers define products directly in HTML and drop ecommerce into any static site or JAMstack app. Its 2021 acquisition by Duda added financial backing without changing its developer-first focus. The transaction-fee model, 2 percent per sale with a $10 minimum, works well for low-volume stores but becomes pricier than fixed-fee competitors once monthly sales pass roughly $10,000.