Recommended sites:

nepalisongchord - The website with chords and tabulature of various artists of Nepal.

angelfire - Nepali chords by Sajeed

guitarchords/tripod - A website with nepali chords.

ultimate guitar - english chords and tabulature site with few nepali chords.

AZ chords - English songs chords site.

E Chords - Website with guitar and keyboard chords for english songs.