List of extensions with window.nostr capacity for web browsers (NIP-07)
https://github.com/nostr-protocol/nips/blob/master/07.md
Use one of these to login to a web nostr client (in browser)
horse (Chrome and derivatives)
https://github.com/fiatjaf/horse
nos2x (Chrome and derivatives)
https://github.com/fiatjaf/nos2x
Alby (Chrome and derivatives, Firefox)
Blockcore (Chrome and derivatives)
https://www.blockcore.net/wallet
nos2x-fox (Firefox)
https://diegogurpegui.com/nos2x-fox/
Flamingo (Chrome and derivatives)
AKA Profiles (Chrome, stores multiple keys)
https://github.com/neilck/aka-extension
TokenPocket (Android, IOS, Chrome and derivatives)
Nostrmo (Android, IOS)