CHARLES BABCOCK lists the greatest software ever written:

1. UNIX
2. IBM's System R
3. Gene-sequencing software at the Institute for Genomic Research
4. IBM System 360 OS
5. Java language
6. Mosaic browser
7. Sabre system
8. Macintosh OS
9. Excel spreadsheet
10. Apollo guidance system
11. Google search rank
12. The Morris worm

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