basicly, the question is in the title. I tryied to search the web and forums and all I get is a headache. Cant find suitable replecment for Eversoft. Maybe some soft/free ware with plugins. I prefer linux programs. I tried Eclipse (no luck) and Visual Studio Code (wich offers reference when I highlight the tag, but nothing happens when you click on it)
Ok, after deeper research I find this one IntelliJ IDEA 2019.2 (Community Edition), it offers references from mozilla website. It works under Windows or Linux and its free. Here is how how to get reference