What Is Tir?
Tir is a simple Lua+Mongrel2 web framework that implements most of the features you need, and avoids the ones you're going to replace anyway, like ORM. It supports extensible templates; coroutine, handler, or callback state management, and is only 1300 lines of clean simple Lua code.
Tir applications take the model of a process per page making it easy to carve your application up across multiple servers and scale only the pieces that need it. If one part is sucking, just replace that part.
You can take a look at the features, download the latest and get started right now.
Are you looking for Help with Tir?
There's a few ways you can get help with Tir. We've got a mailing list at mongrel2@librelist.com that you can join. You can also come talk to us on IRC at #mongrel2 on irc.freenode.org.
There's also documentation you can read and some example projects in the downloads.
Are you looking for The source code?
You can checkout the git repository at github.com/zedshaw/Tir or get the latest tar.gz.
You'll want the develop branch for the latest development work. We can't guarantee that it'll work though.