Hai.

I couldn't find any tool for the site to download pages or pools at once, so i made my own software.

At the moment you can only download Pages, pools will come soon.

Known bugs:
If it says 0 Images try a higher Pages count.

Screenshots:
http://prntscr.com/3zs18q
http://prntscr.com/3zs1dt

Virustotal:
https://www.virustotal.com/de/file/e8061d316185ad4af2f598453faa1a9bb5f3bea573674e518fc7293bff39304e/analysis/1404601408/

And at least the Download:
http://software.cryptic-revolution.de/E621-DownloadManager.exe