*[{{cita web|http://www.opener.pl/en|Open'er Festival Official Website]}}
*[{{cita web|http://www.heinekenmusic.pl/|Heineken Music Official Website]}}
*[{{cita web|url=http://maps.google.com/maps?q=Gdynia,+Poland&t=k&hl=en&ie=UTF8&ll=54.579375,18.529816&spn=0.033678,0.10849&om=1|titolo=Kosakowo airport on Google Maps]}}
;Photographs
*[{{cita web|http://www.opener.pl/galeria_en.html|Photos section in the official website (festival editions 2004–2006)]}}
*[{{cita web|url=http://www.flickr.com/search/?w=all&q=opener+festival&m=tags|titolo=Flickr: Photos tagged with "opener" and "festival"]}}
*[{{cita web|http://www.flickr.com/photos/alex-pl/tags/lastfm%3Aevent%3D34640/|Alex's photos of Open'er Festival 2007]}}
*[{{cita web|url=http://clubbing.waw.pl/gallery2/main.php?g2_itemId=4198|titolo=photos of Open'er Festival 2006 at clubbing.waw.pl]}}
*[{{cita web|http://piotr.iizt.eu/hoe2k6/|Piotr's photos of Open'er Festival 2006]}}
*[{{cita web|url=http://golik.blog.pl/archiwum/index.php?nid=11241533|titolo=Golik's photos of Open'er Festival 2006 day 1]}}
