What does "real-time" mean in terms of a web framework? As a web developer for over a decade, I don't recall seeing a web framework described with that before and have no idea how to interpret it.
I've not really thought about that before, but looking through the commit history it actually seems very likely that we were the first. Back then the WebSocket protocol looked very different from today. https://github.com/mojolicious/mojo/commit/a1a7060e35a6a0965...
That was the first public release. There used to be a History.md file in the repo with the January date. There was a lot of experimentation even before that - browsers started adding experimental WS support on the second half of 2009, right as node was gearing up. Some artifacts from that era:
Another thing to keep in mind is that the precursor SSJS environments like Jack/Narwhal, Helma etc probably added it even earlier. Hard to tell since GitHub itself was new and many of these sources are hard to find today.