Top 10 Killer Apps of All Time (so far)

Here, "killer" doesn't necessarily mean just first or just best implementation, but rather it was also considered meritorious if it made a truck-load of money.

1. Oracle database
   
2. PGP (why didn't this catch on more; especially for email?)
   
3. Apache
   
4. Microsoft Office
   
5. Antivirus Toolkit
   
6. Adobe Photoshop
   
7. SNDMSG (? Me neither)
   
8. Lotus 1-2-3
   
9. Quark Xpress
   
10. Mosaic
    

Judges' reasoning is presented in iTnews.