The official eips.ethereum.org website lags behind the cutting edge & latest Ethereum Improvement Proposals, especially when they are still in the discussion phase and are still pending as a PR on the EIPs repository on github. They are not at all visible on the official website.
EIPTools indexes and renders even those EIPs on the website.

The official website doesn't have any search functionalities, whereas with EIPTools you can search via any EIP number or title across all the EIPs.

We also have our own EIP_GPT that summarizes each & every EIP out there.