http://ozbcoz.com/
http://www.scorpex.net/Uke/
http://nwfolk.com/uketabs.html
http://ukulelehunt.com/
http://www.chordie.com/
http://www.doctoruke.com/songs.html (he also has a beginner link with easy songs)
http://bettyloumusic.com/bettyloupop.htm
https://ukulelewednesdays.com/songbook/
https://ukutabs.com/
http://lewishamukulele.wordpress.com/songs-songbooks/
https://uketunes.wordpress.com/songbooks/
Other good song sites
Here are links to some good song sites to visit when you're looking for songs