Seeker

Seeker is an open-source, third-party P2P client for sharing files.
Features:
* Searching (including wishlists and filters)
* Browsing User Directories
* Downloads and Uploads
* Port Forwarding via UPnP
* Chatrooms and Direct Messages
* Adding Users
* Get and Set User Info
* Privileges Support

This app is, and will always be, completely free, no ads, no "premium" features, etc. It is also open source to view, learn, copy, modify, etc.
Source Code Here: https://github.com/jackBonadies/SeekerAndroid