Yes, both ProsperStack and RetentionEngine offer a Free Trial.
ProsperStack is designed for Medium Business and Small Business.
RetentionEngine is designed for Large Enterprises, Medium Business and Small Business.
Pricing for ProsperStack Starts at $79/Month whereas for RetentionEngine Starts at $19/Month.
Some top alternatives to ProsperStack includes ChurnZero, Custify, ChurnTarget, Freshdesk Customer Success, Upzelo, RetentionEngine, ChurnKey, Freshdesk Customer Success (Formely Freshsuccess) and Brightback.
Some top alternatives to RetentionEngine includes ChurnZero, ClientSuccess, ProsperStack, Custify, EasyCSM, Freshdesk Customer Success, Upzelo, ChurnKey and Freshdesk Customer Success (Formely Freshsuccess).
