>>81926
I don't use any additional software to organize it, I just the normal filesystem. The whole directory structure is, by now, engraved into my brain.
For watching videos I use MPV, for images, depending on what OS I'm on feh or Irfan View and ranger is a good file browser.
The most useful tool for downloading stuff is wget, for example for scraping all the images from IB threads. It doesn't work well with ddos protection though.
There's also a tool called httrack that I use on sites where wget is missing files, it did a good job making a local mirror with working links of one of the big manga/scanlation sites. It doesn't change links in JS/xhrs though and doesn't have a option to completely strip JS.