AFFiNE vs Roam Research

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.

Roam Research is Networked note-taking tool built around bidirectional links and a daily notes workflow.. It is available under a paid model. This tool falls under the note taking category.