A minimalistic app to share files between devices using an ACTION_SEND / ACTON_SEND_MULTIPLE via our Wi-Fi / Wi-Fi Direct based peer to peer communication framework for Android. Checkout the CPT wiki for details or WiFON as an example of more complex application.
The app itself doesn't do much, it allows you to send file to other device (you can change the username in WifonMiniApplication.java) either as "Share as..." or directly from the main activity.
Naturally, both devices must have CPT installed and running. The app doesn't use our application server by default (to demonstrate its P2P nature).