Best Apps for True Online Anonymity

PeerGuardian does not "hide" your IP address because your ip still shows up. These are the real apps that let you truly hide your IP Address, bounce your connection, and change your country origin. Credit goes out to the user who posted proxycap, thanks.

PROXYCAP:
ProxyCap enables you to redirect your computer's network connections through proxy servers. You can tell ProxyCap which applications will connect to the Internet through a proxy and under what circumstances. This is done through a user friendly interface, without the need to reconfigure any of your Internet clients.

PROXYSWITCHER:
The solution is to use Proxy Switcher for all the anonymous browsing needs. It can be used to avoid all sorts of limitations imposed by various sites. Be that a download site that limits amount of downloads. Or video site works only in a particular country - more often than not it gets defeated by the anonymous browsing features Proxy Switcher provides. On top of that, if you used to manually change proxy settings Proxy Switcher provides a way to change them much faster and easier.

TORBUNDLE:
The Tor software protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, it prevents the sites you visit from learning your physical location, and it lets you access sites which are blocked. The Tor Browser Bundle lets you use Tor on Windows, Mac OS X, or Linux without needing to install any software. It can run off a USB flash drive, comes with a pre-configured web browser called Aurora, and is self-contained. If you want more options just download Tor's other compatible software at: https://www.torproject.org/download/download.html.en

TAILS by TOR:
It is a complete operating-system designed to be used from a CD or a USB stick independently of the computer's original operating system. It is Free Software and based on Debian GNU/Linux.

Tails comes with several built-in applications pre-configured with security in mind: web browser, instant messaging client, email client, office suite, image and sound editor, etc.
Tails relies on the Tor anonymity network to protect your privacy online: all software are configured to connect through Tor, and direct (non-anonymous) connections are blocked. Tor is free software and an open network that helps you defend against a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security known as traffic analysis. Tor protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, and it prevents the sites you visit from learning your physical location