[jlehman]

That concise, plain explanation exists in someone else's words four sentences into the above link:

"Urbit is a new OS and peer-to-peer network that’s simple by design, built to last forever, and 100% owned by its users. Under the hood, Urbit is a clean-slate software stack compact enough that an individual developer can understand and control it completely."

That's what it is. Concise and plain. Why re-explain something that's already well-written by another? Is following links and reading for half a minute too much to ask these days? If so, I'd suggest that the ask isn't very genuine.

[ASalazarMX]

Distilling this to concise words, it reads: "Urbit is a network built to last, and owned by its users."

This actually sounds interesting, and could motivate me to read more about it. The marketing speak they use online and in their emails? Not so much.

[lxe]

So it's an OS, like Windows or iOS? But also... a p2p network like bittorrent?