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Top Rated Payment Processing Software with Constant contact

Last updated: September 2026

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17 software options

Acuity Scheduling logo

Online appointment scheduling software and assistant

Acuity Scheduling is an online appointment scheduling solution that allows clients to self-schedule appointments or classes online, complete custom forms, receive confirmation notifications and reminders, and pay or donate with a credit card.

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Broadly logo

Online review & reputation management for small businesses

Broadly is an online review & reputation management tool that helps small service-providing businesses improve their online reputation & attract new customers

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HoneyBook logo

Client management for freelancers & SMBs

Everything you need to run your business: proposals, contracts, invoicing, payments, and more.

Get started with a 7 day free trial today.

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PayPal logo

Payment processing, fraud protection and risk management

PayPal provides an end-to-end suite of tools that can integrate with a business's existing systems and service providers. Its network of shoppers and businesses provides AI-driven data insights to help businesses reach new customers and drive results.

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PayKickstart logo

Hassle-free subscription billing and affiliate management.

PayKickstart is an industry-leading billing and affiliate management platform for subscription-based businesses.

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PayPal Checkout logo

Online Checkout

PayPal Checkout lets growing online businesses accept PayPal, Pay Later, major cards, digital wallets, and local payment methods through a single integration.

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Trolley logo

The payout platform for the internet economy.

Trolley is a global payouts platform that helps businesses onboard, verify, and pay contractors, creators, suppliers, affiliates, and marketplace sellers in 210+ countries while automating tax compliance, recipient management, and payout operations.

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Shopify logo

Cloud-based platform managing eCommerce stores

Shopify is a commerce platform that allows anyone to easily sell online, at a retail location, and everywhere in between

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CharityWeb logo

Online donation management & fundraising for nonprofits

CharityWeb is an online donation management & peer-to-peer fundraising solution, as well as a fundraising event registration & secure transaction platform for nonprofits which supports registration, donation, & personal fundraising tools to cater for the needs of nonprofits of all sizes

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RevCent logo

Subscription billing, trial offers and usage based billing

Manage multiple card processors and payment methods with rule-based profiles. Send charges where you want, when you want based on transaction type, revenue rules, time rules and more.

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MoonClerk logo

One-off and recurring payment management system

MoonClerk is a cloud-based billing and online payment solution which enables users to create online payment forms for and receive one-off and recurring payments

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vcita logo

Appointment scheduling and reminder solution

vcita is an all-in-one business management app designed with small businesses in mind, helping teams manage clients, schedule, billing and administration. The platform includes a CRM to manage client records, online scheduling to book appointments and manage team calendars, billing and invoicing tools, and a client portal for customers to book, pay, and communicate with the business.

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FreshBooks logo

Invoice and accounting software tailored to small businesses

FreshBooks is accounting software that helps small business perform accounting tasks, conduct invoicing, manage expenses, and more.

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FastSpring logo

SaaS eCommerce tool for managing payments and subscriptions

FastSpring is a SaaS eCommerce software designed to help businesses manage payments, subscriptions, risks, compliance, checkout processes, billing, tax collection, and more on a centralized platform. Sales professionals can accept payments via multiple channels.

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Thryv logo

AI-powered software built for small business growth.

Thryv is the AI-native growth platform that helps small businesses get found online, attract more customers, and grow with confidence.

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QuickBooks Online logo

Accounting and business management software

QuickBooks Online is an all-in-one online business software designed to help manage business finances. The platform is built to scale businesses, unlocking insights and providing the functionality of a larger team, all on one integrated platform.

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Clover logo

Comprehensive point of sale & business management solution

Clover is an all-in-one platform designed to help on and offline retailers, quick service restaurants, and other service businesses manage their point-of-sale operations, with secure payment solutions and reliable business management features

Read more about Clover

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