Yes, both Scrapbox and Bear offer a Free Trial.
Scrapbox is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Bear is designed for Large Enterprises, Small Business, Medium Business, Freelancers and Individuals.
Pricing for Scrapbox Starts at $10/User/Month whereas for Bear Starts at $2.49per month when Billed Yearly.
Some top alternatives to Scrapbox includes Evernote, Nimbus Note, Notes.io, CoderNotes, UpNote, Knote, Einote, NoteStack and Note-Smart.
Some top alternatives to Bear includes and undefined.