Yes, both PDF4me and Smallpdf offer a Free Trial.
PDF4me is designed for Individuals, Medium Business and Small Business.
Smallpdf is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for PDF4me Starts at $6/Month whereas for Smallpdf Starts at $7/User/Month when Billed Yearly.
Some top alternatives to PDF4me includes Acuity Scheduling, PDF Convert Free, PDFtoExcel.com, Easy PDF, Scanner Go, PDF.to, Convert PDFs, PDFdoctor, DeftPDF and LightPDF.
Some top alternatives to Smallpdf includes AltoPDF, ZonePDF, iLovePDF, Adobe Acrobat DC, pdfFiller, Easy PDF, Soda PDF, PDFChef, DeftPDF, LightPDF and EaseUS PDF Editor.