Tor is a software project that lets you use the Internet anonymously. tor2web is a project to let Internet users access anonymous servers.
Here's how it works: Imagine you've got something that you want to publish anonymously, like the Federalist Papers or leaked documents from a whistleblower. You publish them via HTTP using a Tor hidden service; that way your anonymity is protected. Then people access those documents through tor2web; that way anyone with a Web browser can see them.
Whenever you see a URL like http://duskgytldkxiuqc6.onion/, that's a Tor hidden Web service. Just replace .onion with .tor2web.org to use the tor2web proxy network. Example:
https://duskgytldkxiuqc6.tor2web.org/
This connects you with tor2web, which then talks to the hidden service via Tor and relays the response back to you.
WARNING: tor2web is only intended to protect publishers, not readers. You won't get the level of anonymity, confidentiality, or authentication that you would get if you were using a Tor client yourself. Using tor2web trades off security for convenience; install Tor for better results. (More details...)
HOST: You can set up your own tor2web proxy.
CODE: You can write code to help us. Also check out tor2web-related tasks in Tor.