“Free, client-side.” — its home page
ChargesFree plan
You are sizing up a market. These filters come from what each product claims about itself: how it positions itself, what it charges, who it names as an alternative, what proof it publishes.
“Free, client-side.” — its home page
“Compare -> https://www.livediagram.app/alternatives” — its home page
“Collaborative diagramming. Free, open source, no login.” — its launch post