Yes, both TaxJar and Dinvy offer a Free Trial.
TaxJar is designed for Freelancers, Medium Business and Small Business.
Dinvy is designed for Large Enterprises, Medium Business and Small Business.
Pricing for TaxJar Starts at $17/Month whereas for Dinvy Starts at $4/User/Month when Billed Yearly.
Some top alternatives to TaxJar includes ClearTax GST Software, autoTax, Thomson Reuters ONESOURCE, ONESOURCE Indirect Tax, EcomTax, TaxCalc, CCH SureTax, Vertex Cloud, Anrok and Avalara.
Some top alternatives to Dinvy includes Teamdeck, timr, InVision, Resource Guru, Schedule it, Resource Management by Smartsheet, Ravetree, Heyweek, Resourceinn, TeamQ and Canvasrs.