The most popular alternative is Shadowsocks, which is both free and Open Source. If that doesn't suit you, our users have ranked 9 alternatives to Puff so hopefully you can find a suitable replacement. Other interesting Puff alternatives are Freegate (Free), UltraSurf (Free), Outline VPN (Free, Open Source) and XX-Net (Free, Open Source).
- A secure socks5 proxy, designed to protect your Internet traffic.- Super FastBleeding edge techniques using Asynchronous I/O and Event-driven programming.
- Freegate is an anti-censorship software for secure and fast Internet access. It was developed and maintained by Dynamic Internet Technology Inc.
- UltraSurf is a free software which enables users inside countries with heavy Internet censorship to visit any public web sites in the world safely and freely.
- A tool by Jigsaw that deploys Shadowsocks servers on multiple cloud service providers.
- XX-Net is GoAgent with improvements.
- GAppProxy is an open source HTTP Proxy software runs on Google App Engine.
- GoAgent is a gae proxy forked from gappproxy/wallproxy.
- WallProxy is an open source Proxy software runs on Google App Engine.
- A platform for building proxies to bypass network restrictions.