Yes, both Sciwheel and ReadCube Papers offer a Free Trial.
Sciwheel is designed for Individuals, Medium Business and Small Business.
ReadCube Papers is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Sciwheel Starts at $9.95/Month whereas for ReadCube Papers Starts at $3/Month.
Some top alternatives to Sciwheel includes ScholarOne, Qualified, Workvivo, nXr, JabRef, Citavi, Zotero, Paperpile, EndNote, ReadCube Papers, RefWorks and SciSpace (formerly Typeset).
Some top alternatives to ReadCube Papers includes Nimbus Note, Qualified, Workvivo, The Papers, Citavi, Zotero, Paperpile, Sciwheel, EndNote, RefWorks and Weava.