- KLMoji by KL Rahul
- Klokan App
- Klosterneuburg App
- KloudTalk Smart Business Phone
- KLUB
- Klubraum
- Kl空聊
- KM - Yolculuğunu Paylaş
- Kmate - Chat with global
- KMB Anliegen
- KMBB Muhtar Talep
- KMD Nexus Video II
- KMentor
- KMK Medlem
- KNA365
- Knack - Tutoring Simplified
- Knackel
- Knatree
- Knaukey
- KNECHT - CuttingEdgeTechnology
- KNECHT - CuttingEdgeTechnology
- Kfans - KPop & KDrama Fandom
- Knit Camp
- Knitt - Connect Nearby People
- Knnkt
- KnoCard
- Knock
- Knock Knock SocialFi
- Knock Me Chat
- Knockk : Make friends & Outing
- KnockKnock.
- Knocknock: Tell Your Story
- KnokKnok: Vanishing Invites
- Knot Perfect: Social Media
- Know Me? - Quiz Your Friends
- Know your neighbour
- Know&Share
- Knowledgeworker Share
- KnowledgeWorks LeadForLearners