Along with the Safari 5.0.1 update, Apple officially opened its Safari Extensions Gallery. Compared to Firefox’s or Chrome’s list, there aren’t that many extensions listed there yet, as everything still fits into one – rather long – page, but I think it’s a good start.

A good extension for Safari is Rapportive. Rapportive shows you everything about your contacts right inside your inbox.

In the sidebar, you will be able to see more information about the sender like photo, occupation and his/her location on the map.

The extension is working automatically with GMail occupying the usual ads spot. It’s also available for Firefox and Chrome.