What are some alternatives?
When comparing Rarchy and Octopus.do, you can also consider the following products
FlowMapp - UX planning tool for creating a visual sitemap
Zen Flowchart - The simplest tool to create flowcharts
SlickPlan - Slickplan is a suite of tools for planning any website project.
Platforma Flowcharts - Collection of cards for website and app prototyping
DYNO Mapper - Create Sitemaps with the DYNO Mapper Visual Sitemap Generator.
Wireflow - Create beautiful flowcharts