Every day, the Fortune staff spends hours poring over tech stories, posts, and reviews from all over the Web to keep tabs on the companies that matter. We've assembled the day's most newsworthy bits below.

The Google Chrome OS homepage.

• After some rumor and speculation, Google finally launched its Chrome OS web store, a marketplace not unlike Apple's App Store and Android's market, with roughly 500 free and paid apps, including Amazon's revamped web-based Kindle experience, The New York Times reader, and Gilt Groupe's portal. (cnet) More