JDownloader - 免費檔案空間下載工具，經測試可以下載超多免空的檔案，許多免空如果不是付費會員，下載過程中會遇到很多廣告，若你使用這個工具就不會看到廣告了，並且會自動略過驗證碼，就連貼上線上影片網址也可以直接下載影片或轉為MP3！（阿榮）
下載連結→ https://www.azofreeware.com/p/jdownloader.html
官方網站：JDownloader
軟體性質：自由軟體（有付費版）
介面語言：繁體中文（含多國語系）
系統需求：Windows、Java Runtime Environment (JRE)（免安裝版已內建）
關鍵字：取代megaeownloader, jdownloader 免安裝中文版, JD, jdownloader下載, jdownloader中文載點, jdownloader portable, jd下載器, MU下載工具, 免空下載工具, 大陸免空下載工具, 優蛋下載工具, 115網盤, 下載工具
JDownloader Portable is open source, platform independent and written completely in Java. It simplifies downloading files from One-Click-Hosters like Rapidshare.com or Megaupload.com - not only for users with a premium account but also for users who don't pay. It offers downloading in multiple paralell streams, captcha recognition, automatical file extraction and much more. Of course, JDownloader is absolutely free of charge. Additionally, many "link encryption" sites are supported - so you just paste the "encrypted" links and JD does the rest. JDownloader can import CCF, RSDF and the new DLC files.