If seed phrase support is a requirement, this list would shrink significantly.
Why does Keychat default to using a seed phrase, unlike most Nostr clients that rely on a single private key? Typical Nostr clients encourage a single ID, as posting notes over time helps that identity accumulate reputation.
Keychat aims to provide users with an online self — an online Me — composed of multiple autonomous IDs. Users can create several chat IDs and choose which one to use when logging into different Mini Apps, which aren’t limited to Nostr clients.