1. Basecamp (project management)

2. Backpack (business organization)

3. Highrise (contact management)

4. Cashboard

5. Google Analytics

6. Google Website Optimizer

7. Crazy Egg

8. FeedBurner

9. Campaign Monitor

10. Survey Monkey

via chromaticsites

11. MindMeister

1. splashup
3. ResizR 
4. adhesiontext
5. CSS Layout Generator
6. PatternCooler
7. ThinkFree
8. ColorSchemer ColorPix
9. net2ftp 
10. Remember The Milk
11. Picreflect
12. Colors on the Web

via smashingapps

1: Drupal

2: Webmin

3: Nolapro

4: eGroupWare

5: Joomla!

6: MediaWiki

7: PhpMyAdmin

8: VMware Server

9: Packetfence

10: Domain Technologie Control

via techrepublic

1. TweetLater
2. Screencast-O-Matic
3. Site-Perf
4. TextReminders
5. Letterfu
6. Yammer
7. DrawAnywhere
8. tinymail.me
9. Quarkbase
10. Broong
11. formatpixel
12. pleasenotify.me
13. AbouThiSite
14. kissa.be
15. SantexQ
16. Anyvite
17. Zapproved

via iyiz