1. Auto advance
Open Source from A to Z

2. A is for Android.

3. B is for Beer.

4. C is for Creative Commons.

5. D is for desktops.

6. E is for editors.

7. F is for freedom.

8. G is for Github.

9. H is for (open) hardware.

10. I is for Inkscape.

11. J is for jobs.

12. K is for kernel.

13. L is for licenses.
I bet you thought L was for Linux, didn't you?

14. M is for monkeys.

15. N is for Nvidia.

16. O is for openness (duh).

17. P is for packages.

18. Q is for...

19. R is for Raspberry Pi.
There's at least one “R” in “shameless self-promotion”

20. S is for SCALE.

21. T is for transparency.

22. U is for Ubuntu.

23. V is for version control.

24. W is for WordPress.

25. X
X is for...

26. Y is for “Y U no use FOSS?”

27. Z is for Zotero and...