Selenium Core, Selenium RC, Watir, FireWatir, SafariWatir, MineralWatir, Selenium IDE, TestGen4Web. These are all tools related to doing functional testing of web applications. The first six are concerned with providing an API for driving the browser like a user would. The latter 2 record user actions and output code to reproduce them.
Problem is: each has very, very little documentation. And what exists is severely outdated. You can’t tell one from the other.
I’ll start digging up stuff and posting here to keep my findings in one place.
This presentation sheds a bit of light on the differences in architecture between the various Selenia. It’d be great to find the contents of the presentation besides the slides.