Yes, both ProProfs Knowledge Base and Whatis offer a Free Trial.
ProProfs Knowledge Base is designed for Large Enterprises, Medium Business and Small Business.
Whatis is designed for Large Enterprises, Medium Business and Small Business.
Pricing for ProProfs Knowledge Base Starts at $0.30/Month when Billed Yearly whereas for Whatis Starts at $72/Month when Billed Yearly.
Some top alternatives to ProProfs Knowledge Base includes KBPublisher, SmartSupport, Talisma KnowledgeBase, HelpHub, KnowledgeOwl, Qualified, Workvivo, PaceKB, KnowledgeBase, Whatis, IFTTT and StructHub.
Some top alternatives to Whatis includes Sleeek, SmartSupport, HuForce, Qualified, Rattle, Klutch, Workvivo, KnowledgeBase, Typed, WorkInSync, ProProfs Knowledge Base and IFTTT.