Free Apps Source

• Rosetta Stone
• Duolingo
• Memrise
• Busuu
• HelloTalk
• Babbel
• Beelinguapp
• Clozemaaster

Various Language

• https://sites.google.com/site/soyouwanttolearnalanguage/
• http://www.memrise.com/home/
• http://www.duolingo.com/

Korean

• http://www.endic.naver.com/
• http://www.howtostudykorean.com/
• http://www.studytopik.go.kr/index.asp
• http://www.talktomeinkorean.com/
• http://www.topik.go.kr/usr/cmm/subLocation.do?menuSeq=2110502
• http://www.topikguide.com/

Tumblr

• https://a-pop-of-korean.tumblr.com/
• https://studykorean101.tumblr.com/

WILL UPDATE LATER