Yes, both Paperpile and Sciwheel offer a Free Trial.
Paperpile is designed for Individuals, Medium Business and Small Business.
Sciwheel is designed for Individuals, Medium Business and Small Business.
Pricing for Paperpile Starts at $2.99/Month whereas for Sciwheel Starts at $9.95/Month.
Some top alternatives to Paperpile includes Qualified, Workvivo, The Papers, nXr, JabRef, Citavi, Zotero, Sciwheel, EndNote, ReadCube Papers, RefWorks and Paper Workspace.
Some top alternatives to Sciwheel includes ScholarOne, Qualified, Workvivo, nXr, JabRef, Citavi, Zotero, Paperpile, EndNote, ReadCube Papers, RefWorks and SciSpace (formerly Typeset).