The document contains a list of 15 URLs linking to various videos and websites about augmented reality technologies. The URLs provide resources on augmented reality development platforms, open source AR software, educational talks on AR, and examples of AR applications for mobile devices.

4. http://www.youtube.com/watch?v=G_AzDO_uwz8

5. http://www.youtube.com/watch?v=h2OfQdYrHRs

6. http://www.youtube.com/watch?v=2-t80mHtM-Y&

7. http://www.youtube.com/watch?v=tpaJBu4BEuA

8. http://www.youtube.com/watch?v=b64_16K2e08

10. http://www.youtube.com/watch?v=ps49T0iJwVg

11. http://www.youtube.com/watch?v=qSfATEZiUYo

12. http://www.ted.com/talks/blaise_aguera.html

13. http://developer.qualcomm.com/dev/augmented-reality http://site.layar.com/create/?gclid=CMfD_8Goo6cCFRQv3wodzWbMCA http://www.wikitude.org/en/developers http://openar.net/category/google-android/ http://www.hitl.washington.edu/artoolkit/ http://www.uco.es/investiga/grupos/ava/node/26 http://www.mixare.org/ http://argon.gatech.edu/ http://www.junaio.com/ http://www.artag.net/