Kentico offers out of the box different web parts to help developers but also content editors to load JS globally on site or page specific.
MD5 for password encryption in Kentico 10
Kentico 10 introduced a new password format, much safer, which is great!
Custom Field Uni Selector
Kentico functionalities are always inspirational.
Knowing that Kentico Uni Selector field is very versatile, we planned to use it for a custom mapping between a Kentico Item and an external DB item.
Custom Field Recaptcha version 2
Kentico 10 supports very nicely Google ReCaptcha version 1.