ThinkFree Show
http://online.thinkfree.com/

Scooch
http://scooch.gr0w.com/

ConceptShare
http://www.conceptshare.com/

Empressr
http://www.empressr.com/

fliptrack
http://www.fliptrack.com/

gOFFICE Presentations
http://www.goffice.com/

S5
http://www.meyerweb.com/eric/tools/s5/

Preezo
http://www.preezo.net/

AJAX-S
http://www.robertnyman.com/2005/11/13/proudly-presenting-ajax-s/

SlideAware
http://www.slideaware.com/

Slideshare
http://www.slideshare.net/

Slide
http://www.slide.com/

Thumbstacks
http://www.thumbstacks.com/

Zoho Show
http://www.zohoshow.com/

Spresent
https://www.spresent.com/