AppFlowy vs Heptabase

AppFlowy is an open-source alternative to Notion that provides documents, wikis, and project management in a privacy-focused workspace. It operates as a local-first application with optional cloud sync and supports self-hosted deployments. AppFlowy uses a block-based editor and includes AI features powered by GPT-5, Gemini 2.5 Pro, and Claude 3.7 Sonnet.

Heptabase is a note-taking tool that visual note-taking tool that organizes notes on spatial whiteboards for learning and sense-making. It offers a paid pricing model.