How to install plugin without composer? For the last weeks I've tried installing composer, but without any luck. I've really tried aaa  looott, and how frustrating it is, it's just not working with SSLv3 for some strange reason.
This was the thread I opened: Unable to get composer running to install CraftCMS 

So I had to give up, at least for now, to be able to use Composer and had to decide to switch to manually setup craft, which I just did. But now I'm having a problem installing plugins. The Plugin store isn't working and it probably uses composer in the back (?). I've found a question here about how to manually install plugins without the plugin store, but... it also uses composer. Which isn't working here.

Is there another way of installing plugins manually?
Alright. Guess the conclusion to my question is that with Craft 3 it isn't realisticly possible to use the plugin store without composer.

Luckily I finally found the problem composer had in connecting to packagist via ssl. Just in case other people have problems with composer too and are running ESET, this might help: unable-to-get-composer-running-to-install-craftcms