Yes, both Slicki and PandaDoc offer a Free Trial.
Slicki is designed for Medium Business and Small Business.
PandaDoc is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slicki Starts at $20/Month whereas for PandaDoc Starts at $19/User/Month when Billed Yearly.
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 PandaDoc includes Proposify, Qwilr, Proposable, seProposals, Docspo, Adobe Sign, DocuSign, HelloSign, QorusDocs and Conga Composer.