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11 days ago+1 for Logseq
Daily journaling by default. Then you can create pages for other info. You write info in blocks, similar to notion, which also allows to link at a block level. There’s some plugins out there for todo lists. I basically add a todo in my daily journal, and then I can access a list of all open todo items.
For sync, I use syncthing to copy the markdown files between devices.
It does exist now in several countries. Mainly came about during/after COVID.