Top 5 open-source products relevant to Knowledge Base and Notes

Logseq is a local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base.

Open Source free

Trilium Notes is a hierarchical note taking application.

Open Source

Dendron is an open-source, local-first, markdown-based, note-taking tool built on top of VSCode. It supports all the usual features you would expect like tagging, backlinks, a graph view, split panes, and so forth.

Open Source freemium $5.0 / Monthly (Custom domain name for publishing.)

Manage your Notes from any Git Repo.

Open Source

In the spirit of free software, everyone is encouraged to help improve this project.

Open Source