AppBrain Fastweb Installer: An alternative to the official Android Market, you can install apps from the web over-the-air. Kevin from Lifehacker:
With the Fast Web Installer add-on for AppBrain, you can head to AppBrain's own market, search and sort to find an app, then click "Install" and see it instantly download onto your phone.
Which makes getting apps onto your phone way easier. Browsing app stores on your phone is convenient, but certainly not fast by any measure. It only works with free apps.
