The Lifehacker list of favorite software and hardware is mostly non-Linux or things like Gmail that I already use. Prism, however, is neither.
I've looked and I don't want it.
Prism, from Mozilla Labs, is a single-app browser. For example, it lets you create something that will run only RememberTheMilk. They call this a "customized webapp."
The advantage? It's distraction-free. The disadvantage? It's still a browser.
Unfortunately, mostly what I want isn't freedom from distractions, it's performance. My major annoyances aren't the icon that says I have new mail -- I put that icon there, after all -- but network slowdowns.
Unfortunately, the best solution I've seen, Google Gears, often isn't available for the webapps I use. I mean, there's no Google Gears for Gmail!
And often, it's broken. Every new Firefox seems to break Gears.
If Mozilla Labs wants to help me, I hope they put some time into fixing the last of these problems.