Shareit is a sharing application for Windows, Android and Mac systems. shareit application automatically categorise all the files like photos, videos, music, and apps and documents. It has a very simple interface with two options, send and receive. Using this you can easily send files through WiFi. WiFi can transfer UPTU 3.5 megabytes per second on normal mobile phones. So you can transfer big movies and big files very quickly.
if the receiver dont have this application you can send this application using Bluetooth. there is an option to send this file via bluetooth inside the shareit application itself.
If there are a lot of friends near you and you want to send the same file to lot of friends; there is another method where you can send this share it application without using Bluetooth.
The method is called zero transfer, where you can host your shareit app via web interface and share that the link for others to download very quickly.
This app works very well on Windows system and laptops. Because laptop have inbuilt WiFi and it works very easily; that you can share files between a laptop and a phone like you transfer from mobile to mobile.