Mochi, Remnote, recently Logseq, plus Obsidian and Roam with community plugins. Also Notion with Leitner algo hacked into database. All of these are note-taking

Mochi, Remnote, recently Logseq, plus Obsidian and Roam with community plugins. Also Notion with Leitner algo hacked into database. All of these are note-taking apps and have flashcards. I would say it's not that bad :)