Is Apache a copyleft?

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Tags

1. #known
2. #license
3. #apache
4. #copyleft
5. #under
6. #proprietary
7. #applications
8. #software
9. #licensed
10. #version
11. #permits
12. #twitter
13. #which
14. #current
15. #reusing
16. #permissive
17. #android
18. #licensing
19. #server