From otaking wiki

Flash kit

DS Xtreme (http://www.ds-x.com) (DS Xtreme review: http://gbatemp.net/index.php?showtopic=38174)

Homebrew

Web browsers

DSWeb (http://palib.info/forum/modules/newbb/viewtopic.php?topic_id=562&forum=28)

Okiwi (http://okiwi.blogspot.com/)

Gnirfleo (http://gnirfleo.blogspot.com/)