Charles Babcock, at Information Week, picks the dozen greatest pieces of software ever written. His choices were:

1. Unix

2. IBM System R

3. gene-sequencing software at the Institute for Genomic Research

4. IBM System/360

5. Java

6. Mosaic

7. Sabre system

8. First Mac Operating System

9. Excel spreadsheet

10. Apollo Guidance Computer

11. Google search rank

12. Morris worm

Somehow or other, he overlooked Castle Wolfenstein and Doom.