Today ViiRuzZ has released PS uTweak, a PS3 homebrew PSN multi-function application.

Download: PS uTweak PS3 Homebrew PSN Application

To quote: This program is called PS uTweak.

What it allows you to do:

-Built in PSN comment generator, as in you type a line break and it outputs a 'hacked' comment for you to FTP
-Ability to check a user's trophy level and trophies!
-Ability to check if PSN username is taken [Has some bugs but generally works!]
-Working friends list checking!
-Tells the status of Playstation Network [Online or Maintenance]
-Features an update system so I can provide future updates.
-Direct links to homebrew downloads!
-Direct link to firmwares
-Easy FTP Access
-Game Download Finder
-Tells a list of PSN code errors and possibilities to fix!
-More!


Download: PS uTweak PS3 Homebrew PSN Application