nostr:npub1erzu2rn4f9nck3qt5yzva5wezszsph07nk3hxrnfcq8g0njx7cfsrmfpnj 
You're missing a lot:
- DNS servers
- Archive apps
- IDEs
- Browsers ;)
- Mastodon
- E-Mail clients
- Messengers :)

...and so on.