- Singing Machine Karaoke
- Singing Master-learn to sing
- Singing News
- Singing Streets
- Singing Tutor - lite
- Singing Vocal Warm Ups - Singer's Friend
- Singistic Karaoke App
- SingIt (DingaStar)
- SingIt - Karaoke Party Machine
- Singlan
- Singly Karaoke
- SingMe
- SingPro
- SingPro for iPhone
- Singscope
- SingSnap Karaoke II
- SingTrue: Learn to sing in tune, pitch perfect
- Singuistics
- Singular Sound MIDI Maestro
- Sing(Vsing): Karaoke Apps
- Sinhala Guitar Chords
- Sino
- Sintony Radio
- Sinusoid
- Sinusoide
- Sions Sånger
- Sioux County Radio
- KWSN 98-1 / AM 1230
- Sirasa FM
- Siremic B
- Siren Sound – Police, Ambulance, Car Siren
- Siren Sounds Soundboard
- Siren Sounds!
- Напугай друзей
- Sirens' Chor - Synth Chorus
- Siruthai FM Tamil
- Sistema Floresta
- SittinOnMusic
- Siva Kavasam&Thirupalliezhuchi
- Six Towns Radio
- Siva Kavasam&Thirupalliezhuchi
- Six Towns Radio
- SixString
- Sixthman
- Siyatha FM
- Siyonka Geetharu
- SK Radia
- SK-51
- SKAA cmd
- Skacore Los Angeles
- Skaka - Shaken Percussion
- Skandhagurunatha-Murugan songs
- Ski Towns Radio
- SKICR SKSSF Radio
- Skiddle: Events and Tickets
- SKIIID
- Skoog
- Skoog Bluetooth MIDI
- Skoog Skratch