AppFlowy
Open-source Notion alternative with local-first storage
AppFlowy is positioned as an open-source alternative to Notion. It offers documents, kanban boards, grids, calendars, and linked databases in a single workspace, and the clients are built with Flutter and Rust for desktop and mobile. You can use the cloud service or host your own server, so notes can stay on hardware you control.
Privacy and ownership are the main selling points. Data is stored locally first, the code is open for review, and teams can modify it. The AI assistant can summarize, rewrite, and answer questions about your pages, and it supports local models through tools like Ollama for people who do not want content leaving their machine.
AppFlowy has a free plan and paid plans for the hosted cloud, and a self-hosted version for those who want to manage infrastructure. It is younger than Notion and has fewer integrations and templates. Alternatives include Notion, Obsidian, AFFiNE, Logseq, and Anytype. AppFlowy suits people and teams who want an open and private workspace.