Description: CmapTools is a free concept mapping software developed by the Institute for Human and Machine Cognition. It allows users to visually organize and represent knowledge in a node-link format to build concept maps.
Type: software
Description: Trilium Notes is an open-source hierarchical note taking application focused on building large personal knowledge bases. It has a tree-structured notes system allowing easy organization of ideas and supports features like linking between notes, embedding media, tagging, encryption, etc.
Type: software
Pricing: Open Source