CGI is in my list of what I consider "core Web technologies", and still include and use in my projects. I haven't written it up yet, but basically it's things

CGI is in my list of what I consider "core Web technologies", and still include and use in my projects. I haven't written it up yet, but basically it's things which are supported by almost every browser and/or almost every web server. Other things on the list are parts of HTML 3.2, like <p> tags, the standard format of access.log, HTTP/1.1, etc. I try to not use anything outside of that list in my projects, some JS things being an exception (which I feature-check before using)