That wasn't part of these exchanges, but yes we produce the tools for that in house.
The Grid is a good example of what's been produced in house, and it's actually open source (and I think being used by the BBC?) https://github.com/guardian/grid
Huh, interesting idea... I guess such a thing could be quite interesting for some short form updates (i.e. live from a conference). You'd probably want that to go through some kind of editor right? I just assumed it would be a news-reader/viewer.
We do indeed have what essentially is a text-editor with Guardian specific features developed in house.
It's used for all of our content, but specifically what you're referring to are liveblogs, where a journalist can write short content and append it to the existing article.
The Grid is a good example of what's been produced in house, and it's actually open source (and I think being used by the BBC?) https://github.com/guardian/grid