Shadowsocks is a high-performance cross-platform secured socks5 proxy that allows users to surf the internet privately and securely. It is available on multiple platforms, including PC, MAC, Mobile (Android and iOS), and Routers (OpenWRT). Shadowsocks uses bleeding-edge techniques with Asynchronous I/O and Event-driven programming, making it suitable for low-end boxes and embedded devices. It is an open-source implementation in python, node.js, golang, C#, and pure C.

To set up your own server, you can refer to the instructions provided on the Shadowsocks website. The source codes are available on GitHub, and you can build your own apk. The FAQ section on the GitHub page provides answers to common questions.

Shadowsocks is licensed under the GNU General Public License, which allows users to redistribute and modify the program. However, there is no warranty, and the program is distributed as is. The program is free software, and users can use it without any restrictions. Other open-source licenses can be found on the GitHub page.

Overall, Shadowsocks is a reliable and secure proxy that allows users to surf the internet privately and securely. It is available on multiple platforms and is easy to set up.