Yes, both Onshape and YuniquePLM offer a Free Trial.
Onshape is designed for and undefined.
YuniquePLM is designed for Individuals, Medium Business and Small Business.
Pricing for Onshape Starts at $1,500/User/Year whereas for YuniquePLM Starts at $150/Month.
Some top alternatives to Onshape includes Odoo PLM, FusePLM, Arena PLM, Upchain PLM, Propel PLM, Autodesk Fusion Lifecycle PLM, CIM Database PLM, KloudPLM and Trace One PLM.
Some top alternatives to YuniquePLM includes Oracle Agile, Upchain PLM, Propel PLM, Autodesk Fusion Lifecycle PLM, Onshape, Lascom, SoftExpert PLM, Trace One PLM and 4G:PLM.