The best thing about lint is that it makes sure I'm not missing any code formatting or style issues in my source files, so they're easy to read for other developers - also great if you want your coworkers/bosses to actually like reading them. It's free (as far as i know) however there are some add-ons which cost money but can be quite powerful with their features such as multiple language support etc.. nothing specific really just find what works well enough! Nothing at this stage yet apartβ¦