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Neither Custellence nor Gleek offers a free trial.
Custellence is designed for Large Enterprises, Medium Business and Small Business.
Gleek is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for Custellence Starts at $25/User/Month when Billed Yearly whereas for Gleek Starts at $9.95/Month.
Some top alternatives to Custellence includes Miro, FigJam, UXPressia, SmartDraw, Gliffy, DrakonHub, 10SCAPE, FlowMapp, Quick Diagram, diagrams.net, CardBoard and The Experience Manager.
Some top alternatives to Gleek includes Miro, FigJam, Gliffy, QuickDBD, Lucidchart, DrawSQL, DrawERD, Quick Diagram, diagrams.net, yEd Graph Editor, Designer and ERD Lab.