Incomplete listing of interactive campus maps and the main technology they use. Please fork and add more to this list or comment below and I'll add directly.

open source

Campus maps using open source software

1. University of Colorado Boulder: Leaflet + Mapbox + TileMill + OSM

2. University of Wisconsin-Madison: Leaflet + Mapbox + TileMill + OSM

3. Universify of California, Santa Cruz: OpenLayers + OSM / Leaflet + OSM

4. Univerity of Montana: TileMill

5. University of Delaware: OpenLayers + OSM

6. University of Maryland: OpenLayers + OSM

7. Vassar College: OpenLayers + ExtJS

8. Yale University: Mapbox + OSM

Google Maps

Campus maps using google maps

1. Middlebury College

2. University of Central Florida

3. Montana State University

4. University of Washington

5. Towson University

6. Oregon State University

7. Washington State University

8. University of Alaska Anchorage

9. The New Schoool

10. Northeastern University

11. University of Hawaii

12. Bucknell University

13. William & Mary

14. Brigham Young University

15. Utah State University

16. Utah Valley University

17. Weber State University

18. University of California, Berkeley

19. University of California, Davis

20. University of California, Irvine

21. University of California, Riverside

22. Stanford University

Esri

Campus maps using Esri

1. University of Kentucky

2. University of Missouri

3. University of California, Santa Barbara

4. University of California, Los Angeles: Esri + Flex

5. University of Oregon - Esri + Flex

6. Western Washington University

Other

1. California Polytechnic State University - flash

2. Louisiana State University - flash

3. Humboldt State University: OpenLayers + http://www.nucloud.com illustrations

4. Mount Mary University: OpenLayers + http://www.nucloud.com illustrations

5. Münster University - Leonardo Campus (GER) - HTML5

6. Southern Utah University - image with links to building pages

7. University of California, San Diego: FacilitiesLink

8. University of Texas at Dallas, Dallas - Flash