The Tor network is the ultimate proxy. However, CGPeers blocks Tor exit nodes because they are heavily abused by bots.
Sites like CroxyProxy may work for browsing the homepage, but they generally fail when you try to log in because they cannot handle the cookies and session data securely. Alternatives to CGPeers
CGPeers Proxy is suitable for:
If you do not have an active account on CGPeers and are trying to find a proxy to get around registration, look at these open or easier-to-access resources instead: