Blocks scripts that you really do not want to run on a site. Also comes with other security features that other extension cant and do not provide, such as XSS protection, clickjacking malware and more. Go ahead and look it up to see how powerful it is.

The 1 star reviews is from people who do not know how to operate this. If you want to block everything by default, just click the option button, and uncheck or check the default settings (script, object, media, frame, font, web-gl, featch, other) to your taste. You can easily customize anything. Click at the custom logo and NoScript will tell you (dark red color on the boxes) what needs to be checked on that site to run normally. The other malware and crap like Google scripts can be set to untrusted with one click. Cant be more simpler.