After an extensive public beta, Trillian Astra has officially launched. Trillian Astra is a popular multi-network instant messenger and communication tool that has been around for a long time. This new version brings a much-needed update to that Trillian legacy.
Cerulean Studios, the developers behind Trillian Astra, are working on a version for the iPhone and iPod Touch, as well as a cross-platform web client and a dedicated client for OS X. I've been testing Trillian Astra for the iPhone, and I like it so far. It leverages push notifications allowing you to stay connected even when it's not running. If they can improve the time to connect it will be my favorite IM on the iPhone.
Trillian Astra comes in two versions, a free version with basic functionality, and a paid, Pro version that adds additional features. The Pro version sells for $25 (or $10 to upgrade for existing Pro owners). I own a Pro license, and found it was well worth it several years ago. I haven't yet decided whether I'll spring for the upgrade, as now I tend to use IM for more basic collaboration, which the free version supports quite nicely.
You can download Trillian Astra for Windows or learn more about it here.