Yes, both Notesnook and Workflowy offer a Free Trial.
Notesnook is designed for Individuals, Medium Business and Small Business.
Workflowy is designed for Large Enterprises, Small Business and Medium Business.
Pricing for Notesnook Starts at $4.16/Month when Billed Yearly whereas for Workflowy Starts at $4.08per month when Billed Yearly.
Some top alternatives to Notesnook includes Evernote, Notes.io, Simplenote, UpNote, Standard Notes, Joplin, Einote, Justnote and NoteStack.
Some top alternatives to Workflowy includes and undefined.
