I'm author of following Nostr apps/libs:
🪄nostr-fetch: A utility library that allows JS/TS apps to effortlessly fetch past events from Nostr relays.
npm: https://www.npmjs.com/package/nostr-fetch
repo: https://github.com/jiftechnify/nostr-fetch
⏳nosaray: Wayback Machine for Nostr, based on nostr-fetch (so far in pre-alpha stage and only supports Japanese).