Logseq pkm note taking/outliner https://github.com/logseq/logseq Syncthing https://github.com/syncthing/syncthing Omnivore, Pocket alternative https://github.com/omnivore-app/omnivore Bypass Paywalls Clean browser addon https://gitlab.com/magnolia1234/bypass-paywalls-firefox-clean

Open source AI models and tools like HuggingChat, Whisper

No, but instructors can have students submit their prompts to them, or provide an alternative assignment, or use locally-run offline AI models like with gpt4all

Paper about the dragon slayer role-playing game used in some CS classes https://peer.asee.org/a-gamification-framework-for-exploratory-learning-in-higher-stem-education