Tor: Users
We have an IRC discussion channel for users and operators. Go to #tor on irc.oftc.net.
We have a bugtracker. If you have a bug, especially a crash bug, read our how to report a Tor bug FAQ wiki entry first and then go to the bugtracker and tell us as much information about it as you can. (If your bug is with Privoxy, your browser, or some other application, please don't put it in our bugtracker.)
Check out weasel's graph of the number of Tor servers over time. To learn more details of the current Tor nodes, look at Geoff Goodell's list of Tor exit nodes by country. You can also fetch the latest dynamically generated directory directly. (Your Tor client fetches this automatically, so loading it yourself is just for novelty.)
The hidden wiki has a list of some hidden services and other things. You need Tor and a proxy like Privoxy to access it.
See the Tor wiki for other user-contributed documentation, etc.
Here's a brief list of programs you might want to use in association with Tor:
Antinat: seems to be a socks client library (and server, but you'd only want the client side) that supports socks4a.
Connect: adds proxy support to SSH. (Win32, Linux, BSD, OS X)
Dsocks: SOCKS client wrapper with enough support to use the built-in OpenSSH or Tor local SOCKS proxy. (BSD)
Freecap: redirects traffic to a SOCKS server. graphical. (Win32)
Kernel socks bouncer: redirects certain streams into Tor. Doesn't deal with DNS. Linux 2.6 only.
Privoxy: an http proxy that
speaks socks4a. Also does html/cookie scrubbing. (Win32, Linux, BSD, OS X)
Proxychains: proxifier, supports user-defined list of proxies. (Linux, BSD, Solaris)
Socat: multipurpose relay. (Linux, BSD, OS X)
Sockscap: redirects traffic to a SOCKS server. graphical. (Win32)
Switchproxy: Mozilla
extension to help you manage your proxy settings. (Firefox, Mozilla, Thunderbird)
Tor-resolve: turns hostnames into IPs privately via Tor, shipped with the Tor package. (Win32, Linux, BSD, OS X)
Torcap: similar to sockscap and freecap. has different strengths/weaknesses. (Win32)
TorControl: a basic Tor controller with GUI. You'll need to set 'ControlPort 9051' in your torrc.
Transocks: Transparent proxy to redirect traffic through a SOCKS proxy. Uses iptables. (Linux)
Transproxy: Transparent proxy for HTTP requests with ipfw, ipnet, ipfwadm, ipchains or iptables . (FreeBSD, Linux).
Tsocks: a program that
intercepts connect() system calls and redirects them through Tor. (Linux, BSD)*