[mark_undoio]

WinDbg's time travel debug is really cool and more people should know about it. I'm always a little sad that it's not (so far!) officially integrated in something like VS Code.

Before it was released publicly I believe Microsoft had been using it internally to share recordings on bug reports against massive pieces of software like Office. So it's a serious piece of tech.

[senderista]

I used it (iDNA) on the Windows team starting around 2006 or so and we were able to resolve bugs in minutes that had been open for years. It was absolute magic.