[odensc]

- Browser integration (a single key combo unlocking & filling in passwords)

Yes.

- OTP support

Yes.

- SSH agent and key storage

No.

- Entry-level (rather than file-level) synchronization

Yes.

- Google Drive synchronization

Nope, but because it's hosted (or self-hosted) that's inapplicable.

- Automatic history maintenance

Yes, if you're talking about password history.

- Storing arbitrary additional data

Yes, including files.

- Icons (makes identifying entries so much faster)

Yes.