Recently I switched to notebook.ai. It has customizable entries for characters, locations, items etc. It may be searched or filtered by name, by tag and with a full-text search. It also allows interlinking the entries for easier reference and navigation. - Source: Reddit / about 1 month ago
World Anvil - World Anvil is a worldbuilding tool for Authors, Storytellers and worldbuilding lovers.
Dot Grid Notebooks - A must have for every designer.
Kanka.io - Kanka.
Paper Saver - Turn old printouts into a notebook.
Plot Factory - Online story planner, organizer, and writing application.
Dot Grid Notebook Black Edition - An all black dot grid notebook for designers & illustrators