PSList: PS3 Friends List for PC
PSList is a program developed by a PlayStation.com forums user lets you login to the PlayStation Network and view your PSN friends list. It shows thing such as friend requests pending, users online and what game they're playing, and who's offline.
Hopefully, you're being smart and don't want to enter your PSN userid and password. However, I decided to be brave, open a couple monitoring tools, and watched what happened.
When you first open the program, before you type anything in, the program phones home for an update file. It connects to 184.108.40.206 and downloads /psnfriends/update.html, which appears to just contain a version number.
Once you sign in, it connects to a few IP addresses: 220.127.116.11, 18.104.22.168, and 22.214.171.124. The last one connects via HTTPS (for authentication), while the other two connect via just HTTP port 80.
126.96.36.199 is NTT America, an IT Solutions provider, and appeared to provide the avatars
188.8.131.52 is Amazon Web Services, and appeared to provide user profile data, and finally
184.108.40.206 is SCEA.
tl;dr version: It doesn't appear to be malicious. It seems to work for what it is, and I look forward to seeing more updates with more features :)
The program was written by morethantoast.
Offical website: http://morethantoast.homeunix.com/psnfriends/