Yes, both Slicki and Papermind offer a Free Trial.
Slicki is designed for Medium Business and Small Business.
Papermind is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slicki Starts at $20/Month whereas for Papermind Starts at $19/Month.
Some top alternatives to Slicki includes PandaDoc, Kipwise, GitBook, M-Files, DocuWare, Documize, OpenKM Document Management, Papermind, Klutch, KB Clip and Slick.
Some top alternatives to Papermind includes CollaborateCloud, Airtable, ClickUp, Collabee, Portway, Slite, Slack, Glip, Appinall, Teams.cc by 500apps and Witeboard.