AFFiNE vs nb

AFFiNE is an open-source knowledge management application that combines documents, whiteboards, and databases in a unified workspace. It operates as a local-first application with optional cloud sync and end-to-end encryption. AFFiNE supports both block-based document editing and freeform canvas-style edgeless editing.

nb is Command-line note-taking, bookmarking, and knowledge base tool with plain-text storage and Git sync.. It is available under a free model. This tool falls under the note taking category.