Sure, Twitter just launched an official iPhone client a few days ago, so you might think there’s not much room for yet-another-Twitter-client for the iPhone. But today Seesmic introduced an app that makes a pretty strong case that there is still room for competition.

That’s because Seesmic for iPhone isn’t just a Twitter app. It’s also an iPhone app. And thanks to integration, you can also use it to update your status on a ton of social networks including MySpace, LinkedIn, Flickr, Blogger, and Tumblr.

When you launch Seesmic the first time, you’re greeted with a series of four boxes. Click one to set up a new Facebook, Twitter, or account. You can also create a box for Twitter trending topics or search topics. Unfortunately, this is the only way to search Twitter. That means that if you’re in the Twitter portion of the app, you have to go back to the home screen to conduct a Twitter search.

Aside from that quirk, the app has all the features you’d expect from a Twitter client, including timeline updates, replies, retweets, direct messages, and access to your profile. You can also compose messages with links, map links, location information, or pictures from your phone.

The Facebook portion of the app is a bit more limited. Basically it just shows you your Facebook News Feed. You can compose updates, and you can click on any item to leave comments, see comments left by others, or click a “like” button. But you can’t see your friend list, applications, or other information.

You can check out the Seesmic promo video and see more screenshots after the break.

Seesmic for iPhone is available as a free download from the iTunes App Store.

Brad Linder

Brad Linder is editor of Liliputing and Mobiputing. He's been tinkering with mobile tech for decades and writing about it since...