I had the Internet Download Manager and I also removed it today. I removed and reset a bunch of things cuz my system was hardly working and hardly letting me do anything. I am happy with the downloader i had to begin with but my question is: IDM cc 7.2.8 is an active addon for my sea monkey browser/probably firefox also, but... is IDM cc 7.2.8 the plugin/extension/addon for Internet Download Manager thats needed for Mozilla Browsers.?

Or is it the Internet Download Manager program itself,  in full? 

I would like to know so I can remove it if I dont need it because I already removed the IDM Program earlier today, and am staying with my old downloader. I am running out of free space on my system and dont want any extras that arent needed taking up the space thats still available. If I dont need this add-on because I dont have IDM, Please let me know.