Communication

Windows Live Messenger

     Used by 8430 people for 97995 hours, 44 minutes and 39 seconds

Microsoft Office Outlook

     Used by 4828 people for 49698 hours, 41 minutes and 25 seconds

Adium

     Used by 1969 people for 32949 hours, 23 minutes and 27 seconds

Mail

     Used by 2542 people for 24415 hours, 22 minutes and 52 seconds

Thunderbird

     Used by 2866 people for 23035 hours, 26 minutes and 14 seconds

Skype

     Used by 5470 people for 22259 hours, 48 minutes and 51 seconds

mIRC

     Used by 1149 people for 18246 hours, 3 minutes and 18 seconds

Miranda IM

     Used by 867 people for 17099 hours, 30 minutes and 37 seconds

Pidgin

     Used by 1503 people for 15965 hours, 4 minutes and 31 seconds

Yahoo! Messenger

     Used by 2346 people for 14796 hours, 17 minutes and 34 seconds

QIP

     Used by 651 people for 12897 hours, 13 minutes and 34 seconds

Google Talk

     Used by 2427 people for 11402 hours, 13 minutes and 59 seconds

Trillian

     Used by 894 people for 9145 hours, 22 minutes and 27 seconds

iChat

     Used by 1440 people for 7939 hours, 35 minutes and 43 seconds

AOL Instant Messenger

     Used by 842 people for 7932 hours, 4 minutes and 56 seconds

Outlook Express

     Used by 1978 people for 4515 hours, 43 minutes and 20 seconds

X-Chat

     Used by 233 people for 4029 hours, 2 minutes and 45 seconds

Microsoft Office Entourage

     Used by 453 people for 3925 hours, 45 minutes and 59 seconds

ICQ

     Used by 698 people for 3684 hours, 6 minutes and 13 seconds

Twitterrific

     Used by 831 people for 3618 hours, 43 minutes and 38 seconds

QIP Infium

     Used by 247 people for 3499 hours, 4 minutes and 55 seconds

Colloquy

     Used by 443 people for 2880 hours, 20 minutes and 4 seconds

X-Chat Aqua

     Used by 137 people for 2699 hours, 41 minutes and 30 seconds

AOL Service Libraries

     Used by 264 people for 2330 hours, 27 minutes and 7 seconds

Vienna

     Used by 273 people for 2251 hours, 15 minutes and 38 seconds