I intend to log all production HTTP requests to be able to do load testing and analysis on that data later on. The log replaying software I have seen so far only seem capable of replaying GETs. Are there tools out there that can take a file in a specific format and run that against a given instance?

The only thing I have seen so far is a tool called [Sprockets](http://patrick.net/sprocket/rwt.html), which does not seem to have been used by other people than the author since 2008 ... 
EDIT: After testing it, it also seems a bit buggy :/