I use my own opensource application, Contextualise (https://contextualise.dev/ https://contextualise.dev/). But, also check out this list of knowledge graph / s

I use my own opensource application, Contextualise (https://contextualise.dev/ https://contextualise.dev/). But, also check out this list of knowledge graph / second brain / digital gardening resources, here: https://github.com/brettkromkamp/awesome-knowledge-graph https://github.com/brettkromkamp/awesome-knowledge-graph