Next Generation Functional Testing Tool
TestWise 4's unique "run selected test steps against the current browser" feature boosts efficiency greatly.
Check out Zhimin Zhan's eBook: Practical Web Test Automation
If you like TestWise for more frameworks such as Cucumber and Watir but lack attach-execution-to-browser, try TestWise 5.
TestWise Recorder is a Firefox extension, which records your operations into executable RWebSpec, Selenium-WebDriver and Watir test scripts while you navigates through your web application in Firefox.
One click Watir and Selenium-WebDriver windows installer, just single installation to enable you running automated acceptance tests from command line, easy integration with your continuous build server. (Prev major versions: 7.2.4, 7.1.0, 6.5.1)
RubyShell is also a one-click Ruby on Rails installer for Windows.