According to my completely unscientific research, about 90% of the TUAW mailbag is comprised of iPhone app announcements. In our continuing effort to not deluge you with iPhone app reviews, I present another "fistful of apps": 6 iPhone app reviews in one post. If you don't have an iPhone, you only have to skip one post. For the rest, this is some serious bang for your blog-reading buck.

I don't play games much, aside from the occasional word challenge, so the apps I've chosen to review are definitely of a more utilitarian ilk. I'd classify them as productivity apps, including a Campfire client, a 3D mind mapping app, a movie cataloger, a task-management solution, a multi-status updater and a nifty tool for developing iPhone interfaces. Read on for the nitty gritty.

Linkinus is the preferred IRC client for a lot of our readers, I know (personally I tend towards Colloquy, but only because I'm a cheapskate and it's donationware), and they kindly dropped us a note to let us know they'd updated to version 1.3. The new build includes the ability to split chat windows (as seen above), in addition to a revamped UI, "major" performance upgrades, plaintext and Spotlight support for logging, and a whole slew of fun things to play around with, including, we're told, a "Whisper" style that will actually embed images, audio files, and YouTube and Google videos right into your chat windows (a la Campfire). Apparently IRC isn't just text anymore.

In fact, at $20 for all these features, Linkinus really is a steal for anyone who spends any amount of time in an IRC channel. Colloquy still does everything I need it to when I jump into IRC periodically, but if you want to chat like a pro in there, Linkinus is a great choice.

If you're a fan of web-based group chat tool Campfire, you may be pleased to learn that it's now available for the iPhone. Now, when you visit Campfire sites on the iPhone, you'll be directed to an iPhone-optimized version.

Due to the way the developers have created the iPhone version, you'll need to use two-fingered scrolling to move through your transcript. For more details, check out 37signal's post, where they explain the technical reasons for the two-finger scroll. Apparently, on the iPhone the "auto" overflow property for HTML gets rendered as a separate frame.

If you'd like to learn more about the iPhone's special capabilities and limitations with respect to its Mobile Safari implementation, I strongly recommend you look into the iPhone Web Dev group at google groups.

It's been over a year since we first mentioned Pyro, the powerful Mac OS X client for 37signals' Campfire web-based chat service for groups and businesses. While I personally didn't pick up a copy back then since I wasn't a Campfire user, I'm not entirely familiar with every change that has come since April '06. Still, even the most recent list of changes warrants Pyro another mention, especially since I'm looking at using Campfire for a few uses and projects.

In addition to already offering a dashboard and central location for all your Campfire chats and displaying message status alerts in the Dock icon, check out what's new in Pyro 1.6:

• Any file type can be dragged onto Pyro to share in a Campfire chat
• Pyro will automatically zip a folder or .APP
• Dragging an image from a web browser will insert a URL for that image instead of uploading it
• Campfire's new sidebar search field now works in Pyro
• Support for the new WebKit installed by Safari 3 beta (mentioned on the Pyro development blog)
• and of course, bug fixes

As Campfire's example uses page details, there are a lot of great scenarios for such a slick web app, and Pyro looks like the perfect tool to bring together the coolness of Campfire with the power of Mac OS X. Surprisingly, Pyro is still offered free, and even though Campfire primarily focuses on business users by offering a few paid accounts, it too has a free account with which you can register and tinker around to see if Campfire is right for your use.

Campfire is the web-based chat application by the folks at 37 Signals. It's full of Web 2.0 bells and whistles, and looks like a good means of cross-platform, application independent collaboration. Earlier this week, 37 Signals released the initial beta of Pyro for Campfire users who have Macs. They're calling it a "site-specific browser," in that its primary purpose in life is to interact with Campfire.* Enhancements Pyro offers include:

• A single location for all your chats
• Chat room/message status in the dock
• Access all open rooms in a single window

Pyro is universal, free and requires a Campfire account (obviously). No specific OS requirements were given.

*No, the irony of using Mac OS-only application to interact with an application independent, cross platform chat system is not lost on us.