- Y Free Sync
- Y Tap
- Y U NO
- Y U NO!
- Y! Live Sync
- Y&R Game Changer
- Y-Titty abgedrehte YouTube Comedy
- Y4iT - 12th Youth Congress On Information Technology
- YA Messenger
- StarBot
- Ya3bad
- Yaan
- Yabb Messenger - Free Calls & Text Messaging | Group Chat or Private Messages with Friends
- Yabba NZ
- YabbaChat
- Yabber - For Roommates
- Yaccl ~Yet Another Chatter Client~
- Yacha
- YachtBook
- YachtBuddy
- Yachting Antibes
- YadaYada
- Yadox
- YaeyamaHazardMap
- YaeYoe
- Yaga - Group Chat Gone Bananas
- Yago
- Yak Messenger
- Yak Talks
- Yakaz - Free Classifieds
- Yakshemash - Soundboard & Ringtones
- Yale SOM Reunions
- Yall
- Yalla-Bina
- Yallou
- Yalnızım
- YAMA
- Yamaha Córdoba
- YAMANOTE LOOP LINE
- YamBam
- YamBam HD
- Yambla
- YaMeCanse
- Yametoo Remix
- Yammo
- YAMOOD
- YaNa.
- YangXiFu
- YANI&KEITH
- Yanoox
- Yao-大学同学实名邀请制社交创业平台
- YAOYOROZU
- Yap Chat
- YAP Social - Share Your Life.
- Yap TV - Social Guide to TV and iTunes
- Yap Yap
- Yapert Is For Fans
- Yapit - Reveal the truth around you
- YapMobile
- Yapp
- Yapper
- Yappie
- Yappl
- Yappy
- Yapr
- Yaprak Yapsan
- YapTap - send song and voice snippets
- Yaptel
- Yapza
- Yard Help
- Yard Sale Watch
- Yarding
- YarlOlai Vaanoli
- Yarma
- Yarma - Your Ravelry Camera App
- Yarnee
- YASSSU - Break the news
- Yata!
- Yatedo People Search
- Yatter Bay
- Yawp
- Yawper
- YAX - Truly you
- YAY - Connect, Call, Share
- YAYA-World
- YAYA-World HD
- Yaytop
- Yaz1 Mobil
- YB
- YBapp
- YBCBD Assist
- YBKB
- YBLN
- YC
- YC ALBERTA 1.0
- YC HD
- YCall - Cheap calls
- YConnect - Professional Social Network
- YCPublicPatrolSystem
- YDU
- Yea or Nah
- Yeaker
- Yeapp: write and discover notes all around the world
- Yeed - events social network
- Yeekle Recommendation Assistant - Your Endorsements Enable Kindness & Love Endlessly
- YEG Vote '13
- Yelago – Social Gaming App to Challenge your Friend
- Yeller - Big text GIF messenger
- Yellho
- Yelli - Muslim Singles
- Yello
- YELLO Softphone
- Yelloh! Village
- Yellophone
- Yellow Mad Monkey
- Yellow Social Calendar
- Yellow Umbrella
- Yellowlink Events
- Yellowlink Mobile Events
- YellowRibbon - The sweetest letters ever.
- YellowSnap!
- YellowZip
- Yeni Yıl
- Yenta
- Yep papa!
- Yep That URL
- Yep! Changing the way people meet
- Yep?
- Yepali
- Yepic - activities and people nearby
- YepLike!
- YepNope
- Yepp - Buy & Sell Everything
- Yerp
- YES - 新美图主义!
- YES Brighton
- Yes by Yes Yes
- Yes Equality
- Yes Life for iOS
- Yes Life for iPad
- Yes Lord Minsitries
- Yes No Tweet
- Yes or No - find your mate
- Yes We Camera!
- Yes!
- YesGet
- Yesh
- YesIam
- YesImOnline
- Yesman Messenger
- YesMe Messenger - Ping Your Friends in One Tap
- YESneaker
- YESNO - Seeking clarity
- YesNoChat
- YesoNext
- YesWaa
- YesWeScore SpeedBadminton
- YesWeScore Tennis Competition
- Yet Another Face Dialer Lite
- YetConnect
- Yeti - Campus Stories
- Yeti - Discover Local
- Yetti - the hmu app
- Yeyu
- YFLO Kolkata Chapter
- YGen
- YGS
- Yi New Delhi
- Yiabi 新聞
- Yiabi電子書App
- Yiddish Keyboard
- Yiftee - Digital Gift Card Wallet
- Yigler
- Yik Yak
- Yip Mobile
- Yips n Yaps
- YiQi