Flow extension provides a Proxy history-like view along with search filter capabilities for all Burp tools. Requests without responses received are also shown and they are later updated as soon a response is received.
If you are using the "Platform Authentication" or "Match and Replace" feature of a burp, then Flow is unable to match responses to related requests.
Steps to install
Start Burp Suite.
Move to the Extender tab.
Go to BApp Store.
GitHub - hvqzao/burp-flow: Extension providing view with filtering capabilities for both complete and incomplete requests from all burp tools.