If web apps are going to truly replace native apps, they'll need the near-instantaneous responsiveness of desktop apps. That appears to be on the horizon, thankfully. Google is unveiling Chrome tools that will help web apps run as quickly as their native counterparts, not to mention make them more usable offline. A newly introduce Web Bundles framework will let developers distribute fast-loading web apps through "any format," including USB drives -- you wouldn't even need to be online to start using an app. Background syncing and context indexing, meanwhile, will let apps "proactively" cache data to make sure it's quickly available whether or not you're connected.