Neither Authorize.Net nor PaySimple offers a free trial.
Authorize.Net is designed for Large Enterprises, Medium Business and Small Business.
PaySimple is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Authorize.Net Starts at $25/Month whereas for PaySimple Starts at $59.95/Month.
Some top alternatives to Authorize.Net includes Stripe Payments, QuickBooks Payments, PayorCRM, UniPay Gateway, NETELLER, NextPay Payment Gateway, Airpay, Better Payment, aPay Payment Gateway Systems and PayNet.
Some top alternatives to PaySimple includes Stripe Payments, WePay, Square Payments, SuperPay, Paystand, Better Payment, SwipeSimple, PayNet and PayApp.