Neither Shift nor Shells.com offers a free trial.
Shift is designed for Large Enterprises, Medium Business and Small Business.
Shells.com is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Shift Starts at $99.99/Year whereas for Shells.com Starts at $4.95/Month.
Some top alternatives to Shift includes Qualified, OfficeSpace Software, Workvivo, Shells.com, KnowledgeOS, Setapp, SmartWindows, Satellite Deskworks, OneDock, Desktop.com, WorkDesk and Basaas.
Some top alternatives to Shells.com includes SaaSLicense, vDeskWorks, InvoiceCloud, Qualified, Workvivo, Distributed, Satellite Deskworks, OneDock, Desktop.com, WorkDesk, Desktops by Paperspace and Basaas.