Selenium IDE —
Is a prototyping tool for building test scripts.
It is a Firefox and Chrome plugin and provides an easy-to-use interface for developing automated tests.
Has a recording feature, which records user actions as they are performed and then exports them as a reusable script in one of many programming languages that can be later executed.
Doesn’t provide iteration or conditional statements for test scripts.
Running Test Cases
You can run a test case all at once, stop and start it, run it one line at a time, run a single command you are currently developing, and you can do a batch run of an entire test suite.