SiYuan
SiYuan is an open-source, local-first personal knowledge base — think Notion's blocks and databases, Obsidian's two-way links, and Anki's flashcards, with your data kept as files on your own machine instead of a company's servers. The app is free (even for work); a small paid membership covers extras like official cloud sync, and you can self-host sync as a single container. Licensed AGPL-3.0. Read from github.com/siyuan-note/siyuan and the siyuan-en docs; Sush hasn't installed it yet.
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