Browser-native technologies are inherent in the term Comet. Attempts to improve non-polling HTTP communication have come from multiple sides:
* The [[HTML 5]] draft specification produced by the [[Web Hypertext Application Technology Working Group]] (WHATWG) specifies so called [[server-sent events]],<ref name="server-sent-events">{{cite web|editor=Ian Hickson |date=2007-10-27 |work=HTML 5 - Call For Comments|title=6.2 Server-sent DOM events|url=http://www.whatwg.org/specs/web-apps/2007-10-26/multipage/section-server-sent-events.html#server-sent-events |publisher=[[WHATWG]]|access-date=2008-10-07}}</ref> which defines a new JavaScript interface <code>EventSource</code> and a new MIME type <code>text/event-stream</code>. [[Server-sent events#Web browsers|All major browsers except Microsoft Internet Explorer]] include this technology.
* The [[HTML 5]] [[WebSocket]] API working draft specifies a method for creating a persistent connection with a server and receiving messages via an <code>onmessage</code> callback.<ref>
