Yes, both Terrastruct and EDraw Max offer a Free Trial.
Terrastruct is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
EDraw Max is designed for and Small Business.
Pricing for Terrastruct Starts at $4.99/Month whereas for EDraw Max Starts at $99/Year.
Some top alternatives to Terrastruct includes Miro, FigJam, SmartDraw, Gliffy, Microsoft Visio, DrakonHub, Creately, Lucidchart, AutoCloud, Isoflow, Quick Diagram and diagrams.net.
Some top alternatives to EDraw Max includes Miro, FigJam, MindManager, SmartDraw, Gliffy, Microsoft Visio, Creately, Lucidchart, DrawSQL, Quick Diagram, diagrams.net and yEd Graph Editor.