Описание тега sideloading
The process of transferring data between two local devices. In terms of mobile devices it means to use USB, BT, NFC, memory-card or a local network instead of online app stores like Marketplace, Google Play, iTunes.
Sideloading is a term used in Internet culture, similar to "upload" and "download", but in reference to the process of transferring data between two local devices, in particular between a computer and a mobile device such as a mobile phone, smartphone, PDA, tablet, portable media player or e-reader.
See the complete article here