Best Checkout & Cart Tools in 2026

Subscription billing and shopping cart

4.7 /5 across G2 and Capterra · 171 ratings, Sep 2026

PayKickstart is a subscription billing and affiliate management platform designed for online businesses selling digital and physical products. It combines checkout page building, recurring billing management, revenue retention tools, and a built-in affiliate program into one system. The platform supports 135+ currencies, offers 50+ customizable checkout templates, and includes dunning management with cancellation recovery flows to reduce churn. PayKickstart serves course creators, SaaS businesses, coaches, consultants, and agencies. It integrates with 60+ apps plus Zapier, processes over $1 billion, and uses a revenue-based pricing model where costs scale with business growth.

E-commerce platform for creators

4.3 /5 across G2 and Capterra · 146 ratings, Sep 2026

SamCart is an ecommerce checkout platform designed for creators, course sellers, and digital entrepreneurs who need high-converting sales pages without building a full online store. It replaces clunky shopping carts with optimized one-page checkouts, order bumps, and one-click upsells that maximize average order value. SamCart handles subscriptions, payment plans, affiliate management, and A/B testing natively so sellers can focus on products rather than tech. Over 40,000 businesses use it to sell digital products, coaching programs, memberships, and physical goods through streamlined purchase flows.

High-converting checkout and shopping cart platform

4.6 /5 on G2 · 31 ratings, Sep 2026

ThriveCart is a high-converting checkout and shopping cart platform built for creators, course sellers, and online businesses. It offers one-page and embeddable checkout forms, one-click upsells, bump offers, A/B testing, affiliate management, and detailed revenue analytics. Unlike most competitors, ThriveCart sells lifetime licenses rather than monthly subscriptions, making it a cost-effective long-term choice for digital product sellers who want full control over their sales funnel.

Straightforward e-commerce for small businesses

2.4 /5 across G2, Capterra and Trustpilot · 502 ratings, Sep 2026

Volusion provides e-commerce for small businesses. Online store platform with straightforward approach-commerce without complexity. The simplicity serves small businesses. The features are sufficient. The learning is gentle. Small businesses wanting straightforward e-commerce use Volusion for simple online stores.

Empowering businesses with a free, open-source, and feature-rich e-commerce platform.

3.9 /5 on G2 · 42 ratings, Sep 2026

Zen Cart is a free, open-source e-commerce shopping cart software designed to help individuals and businesses establish their online stores. It provides a comprehensive set of built-in functionalities for managing products, sales, customers, and payments without restrictions on product quantity, sales volumes, or administrative users. The platform is built with flexibility in mind, offering extensive customization options through free and commercial plugins for payments, shipping, image management, and more. It supports multi-language and multi-currency operations, various payment gateways like PayPal and Stripe, and multiple shipping options. Zen Cart is ideal for small to medium-sized businesses looking for an unrestricted and community-supported solution to sell products online, including those needing B2B capabilities, discount management, and mobile accessibility. Zen Cart aims to provide an alternative to commercial e-commerce platforms by offering a robust, stable, and continuously developed solution that avoids escalating fees as a business grows. It's suitable for users who prefer an open-source environment and can leverage community support and extensive documentation for implementation and ongoing management.

Add e-commerce to any website with a flexible shopping cart

4.2 /5 across G2, Capterra and Trustpilot · 12 ratings, Sep 2026

Snipcart adds e-commerce to any website. Shopping cart overlay that works anywhere-sell from existing sites. The integration is non-invasive. The checkout is polished. The developer control is high. Developers adding commerce to existing sites use Snipcart for flexible e-commerce.