do you know a plugin? – upload on my hosting, without download???

hello dear friends

there is a download links:
[url removed – Mark]

can i upload this file ” Artisteer.v3.0.0.33215_p30download.com.zip ” on my hosting, without download it?

If yes: What plugin? What system?

If not:
why (in WordPress ) we can upload a theme or a plugin on my hosting, without download thats?

thanks ??