• Woodbine house - www.woodbinehouse.com

 

• Ostvarenje - http://razvojdjece.crolink.net

 

• The Down Syndrome Educational Trust - http://www.downsed.org/

 

• Mayer Johnson - http://www.mayer-johnson.com/

 

• Talktools - http://www.talktools.net/site/web-content/index.htm

 

• Widgit symbols - http://www.widgit.com/

 

• Do2learn - http://www.do2learn.com/