Selenium is a web application testing framework. It does not require scripts writing. It is easy to use. Selenium makes web testing faster. Hence, the skill to use selenium is…
Selenium IDE is an integrated development environment tool to record and playback. It is a firefox plugin. Practically, I have used Selenium IDE on Firefox 50.0 version. However, support for the current version may vary.
You may download Selenium IDE FireFox extension here.