Read my comment on the top of the comments. The top features are browser integration, auto-type and integration with Touch ID/fingerprint reader.
> how would people compare this to something such as 1Password?
KeePassXC auto-type is a lot more powerful. It can be configured in several ways and works with a lot more windows: SSH sessions in terminals, os windows in programs, etc.
OTOH, 1Password is automatically "clouded". With KeePassXC you need to place the encrypted database in a cloud (OneDrive, Google Drive, Apple Drive).