The nostr protocol offers multiple options for long format contents (using NIP23) here the options found:
- https://habla.news (the best from my experience)
- https://blogstack.io
- https://wikistr.com aiming to replace the other Wiki
- https://yakihonne.com (post tagged/branded)
also found some tools:
- https://highlighter.com a reader to save and refer highlignts and quotes as nostr notes
- https://migrate.nostr.com that helps convert posts in NIP23s
- https://nosli.vercel.app to create curated lists notes into a NIP23s
...and probably many more will pop up soon!