Presently waver has only basic functionalities and it allows you to view a list of waves, reply to waves, create a new wave and manage wave contacts.Waver gives you a single-column view of your wave account.
Waver is a free download for all platforms, and it requires Adobe AIR. It can be downloaded from this link: Download Waver.
By the way if you are still looking for a wave invite, then headover to our wave invitation giveaway to get one. Three days are still left in our wave invites giveaway. Check it out here Google Wave Invitation Giveaway: 5 wave invites up for grabs