- X'mas SMS Templates
- X-City
- X-mas Greetings.
- X-MasTree
- X-Pulse Student Loyalty Rewards Program
- X-run
- XAAC
- Xambel
- Xarxa de blocs escrits en Català - Estol.cat
- Xat Garrotxa
- Xavyx
- XBL Find a Friend
- XBook
- Xbox Avatar 360
- XBox Dash
- XCAR爱卡汽车
- XchallengeV – Thử thách chính mình
- Xchangewithme
- XclusivO
- XCOS-跨二次元动漫交友,探索cosplay个性漫画社区
- XCROOZ Editor for iPhone
- XCROOZ for iPhone
- XCY微办公HD
- XD Forum
- XD Messenger
- XD Offline
- XendApp
- Xenie Communicator
- Xenosoman
- XEROS2013
- XERQ
- Xiglute App
- Xiii Tomador
- Xim Mob
- XinFan
- XING EVENTS
- XING Jobs Marketplace - Find the Right Job for Your Lifestyle
- XING – Your business network
- Xinhua AL
- Xinyu Sales Assistant
- XIRKEL: Gay Social Network (for LGBT people: lesbian, gay, bi sex ual and transgender)
- XKit
- XLane Mobile
- Xlive
- Xmas Card (2011 Christmas Hits)
- Xmas Cards
- Xmas Cards for iPad
- Xmas Charades
- Xmas Ecard
- Xmas Frames
- Xmas Game
- Xmas Games Gold
- XMAS GREETING CARD
- XMAS GREETING CARDS HD
- Xmas iCard
- Xmas iCard(2011 Christmas Hits)
- Xmas Lights!
- Xmas MUSIC Gold
- Xmas Photo, Christmas Photo
- Xmas Pop Star DressUp
- Xmas Repost : Christmas Gift for instagram Lover
- XMas Retina Backgrounds - Christmas Card Photo To Tweeter,Webmail
- Xmas Sticker Camera
- Xmas Texts
- Xmeets , Social sexy, meetups, dating, friend, women, man, love, same sex, couple,
- Xmplifi
- XMS - Unlimited messaging.
- XNameTag
- XNotify
- XNZS
- XO ME
- XO!
- XO: Get Opinions Fast
- Xobor Forum App
- XOOK Mobile
- XOVILICHTER
- XOXO - Quick & Simple Messenger
- XOXO kisses and hugs
- XOXO TALK[Shout Secret Gossip Silently]
- XOXO: Play with kisses
- Xpan H-Overa
- Xpire
- XPLO
- Xplorer
- Xplova Meetup
- Xpress Yourself (Xpress 2)
- XPressions App
- XpressPix
- XpressPix Lite
- XS Homecoming
- XsAndOs Game
- Xtracash worker
- Xtrahelp
- XTRAKK GPS Tracker
- XtraSound mlg
- Xtravoip-Dialer
- Xtreme Clean
- Xtreme Connect
- Xtreme Skater Skateboarding Photo Editor
- Xtreme Talents
- Xtribe
- XU
- Xuntes - Play. Connect.
- Xuqa
- XVDialer
- XwebPhone - Cheap International Calls
- XWinks
- XXIV Asamblea OLACEFS
- XXL
- XYFriends
- Xylo - Social Phonebook
- Xyngu
- Xyngular In Touch
- XYZ Shot