Here are some of the more interesting projects that I like:
Messaging:
www.0xchat.com/# - Private messaging - think WhatsApp
Xitter Like Clients:
damus.io - iPhone client
nostrapps.com/amethyst - Android client
primal.net/downloads - Android, iPhone & Desktop
shipyard.pub/posts - Schedule future posts
Interesting sites:
zap.stream - Video streaming
fountain.fm - Podcasting
wavlake.com - Music streaming
shopstr.store - Online shop
zap.cooking/recent - Cooking recipes
ostrich.work - NOSTR jobs board
NOSTR tools
nostr.band - Powerful search tool
nostr.wine - Powerful, but centralised paid relay
npub.pro - Website creation tool
nostr.build - Media and file storage
relay.tools - Build and curate your own relay
creatr.nostr.wine/subscriptions/new-user - Creator tools
List of NOSTR apps: