Yes, both Chargebee and Kayako offer a Free Trial.
Chargebee is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Kayako is designed for Large Enterprises, Medium Business and Small Business.
Pricing details for both Chargebee and Kayako are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to Chargebee includes billwerk, Subill, Zuora Billing, Billsby, ChimpCharge, Fusebill, ReCharge, Recurly and RevenueCat.
Some top alternatives to Kayako includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, ManageEngine ServiceDesk Plus, Freshdesk, Deskero, Teamwork Desk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, CRMdesk, Sitehelpdesk, LabiDesk, HESK and BoldDesk.