KLMNO

O

1. https://www.oppo.com/en/oreo/appmarket/

R

1. https://www.realvnc.com/en/connect/download/

S

1. https://www.samsung.com/us/apps/galaxy-store/

2. http://slideme.org/

3. http://slideme.org/market

4. https://en.softonic.com/