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It differs from other defrag tools on the market, by enabling you to quickly and simply defrag the files you want to, without having to process the whole drive. You can defrag only if the computer is idle for a definable time, so Defraggler does not slow down the computer if you work on more important tasks. Defraggler also lets you defragment multiple drives on the same PC, using different schedules.
Defraggler uses the Windows Task Scheduler to enable you to set it for future defragging. Simply tell it how often you want it to defrag a drive (once, daily, weekly or monthly). Then it will go ahead on its own, tirelessly defragging your computer whenever you need it to.
You can defragment your main C: drive every night, and your external D: hard drive every week. It&#39;s up to you.
Simply run it, select the file and defragment in seconds. No more struggling with the Windows defragmentation tool!
An original portable version exists, but it is not easy to find: http://www.piriform.com/defraggler/download .

VirusTotal returns the following: Win32/Bundled.Toolbar.Google.D potentially unsafe

Defraggler

Windows

It differs from other defrag tools on the market, by enabling you to quickly and simply defrag the files you want to, without having to process the whole drive.

Persepolis Download Manager is utility for download easier and faster with https://alternativeto.net/software/aria2/ and improved it. 

- It supports HTTP(S) &amp; FTP.
- Persepolis configures aria2 automatically for maximum speed and it have a GUI for using easier. 
- You can adjust start time and end time for downloads. 
- Download queue .
- Multi segment
- Persepolis can shutdown system after download. 
- Persepolis can download video from Youtube, Vimeo, DailyMotion, ... very easy. Just paste the link and download video or just sound of the video with your desire quality.

Persepolis Download Manager

Linux

Persepolis Download Manager is utility for download easier and faster with <a href='//alternativeto.net/software/aria2/'><img alt='Small aria2 icon' class='mini-app-icon' src='//d2.alternativeto.net/dist/icons/aria2_105053.png?width=36&height=36&mode=crop&upscale=false' />aria2</a> and improved it. - It supports HTTP(S) &amp; FTP.

Disk fragmentation leads to system slowdowns, PC crashes, slow startup and shutdown and sometimes to system failures. Auslogics Disk Defrag is designed for fast optimization of todays modern hard disks. Get the maximum performance out of your expensive hardware investments.

It suggests to change default search engines and start page to Yahoo in web browsers

Auslogics Disk Defrag

Disk fragmentation leads to system slowdowns, PC crashes, slow startup and shutdown and sometimes to system failures.

iGetter is a full featured download manager and accelerator. It resumes broken downloads and recovers from download errors. It is excellent utility for files that you want to download at ease. 

Key Features:

    * iGetter resumes broken downloads, checking date and size.
    * iGetter supports Segmented (Accelerated) downloading. This basic feature of iGetter can greatly improve the speed of your downloads.
    * iGetter supports HTTP and FTP protocols as well as HTTPS and FTP over SSL implicitly and explicitly.
    * iGetter integrates with the FileAvenue.net web service. This feature allows the latest and most popular files of the FileAvenue.net downloads library to appear directly in iGetter.
    * iGetter supports searching of file mirrors for additional acceleration of downloads.
    * iGetter integrates with Firefox (Mac/Win), Safari (Mac), Camino (Mac), iCab (Mac), and Internet Explorer (Win) via a contextual menu for hyperlinks.
    * iGetter supports the drag and drop technology and with its Target Icon you can easily download any dragable link or file with Internet location.
    * iGetter supports monitoring of your clipboard for Internet addresses.
    * iGetter can process all web page links for downloading in the queue.
    * iGetter allows you to preview the contents of &#39;zip&#39; compressed files before to download them.

iGetter

iGetter is a full featured download manager and accelerator. It resumes broken downloads and recovers from download errors.

The Ant Download manager main screen and context menu

Manage file downloads by types, each in a folder or all in a folder

Youtube button of downloading movies in web browser

Ant Download Manager is a fast and easy downloader of any internet files.
Advanced support of video services (YouTube, FB, VKontakte, Rutube, etc...).

- Free version with functional limitations
Simple, user-friendly, intuitive interface. Easy access to download the file. Categories. Preview content. Downloads list, sorting options. Drag and drop. Multi-language support (Arabic, Chinese (Simplified and Traditional), German, Greek, English, Korean, Spanish, French, Hungarian, Italian, Dutch, Polish, Romanian, Russian, Slovak, Turkish, Ukrainian, Slovenian, Farsi, Portuguese (Brazilian).
- Fast and Effective
Download your files as quickly as possible without slowing down your other online activities or PC works.
Multi-threaded downloading. Download speed acceleration. Supports HTTP(S), FTP(S), RTMP(x) protocols.
-Browser Integration 
Full integration to most popular web browsers. Internet Explorer 8+ Mozilla Firefox 53+ Google Chrome 31+
and their clones ( Waterfox, Opera, Vivaldi, Slimjet, ComodoDragon, Brave, etc.).
- Any Content
Download your favorite movies, video and audio from the Internet.
Supports popular video services (Youtube, Vimeo, DailyMotion, Facebook, Rutube etc.).
Conversion and merge of Youtube DASH files
- Storing encrypted passwords for sites requiring authentication.
- No advertising
- Links parking, active downloads indicators;
- Download priorities: Highest, High, Normal, Below, Low, Disabled;
- Computer shutdown after all downloads;
- Re-download bad fragments. If the file was downloaded with errors, that is, the ability to re-download only erroneous fragments, rather than to start download again.
- Support most popular Generators Premium Links (Debrids)
- Scheduler: for schedule a download starts
- Skins : customize the interface color,  increase /decrease the font of the text
- All downloaded files are saved in folders into categories according to their MIME type. 
- change the order in which downloads start.
- basket/parking link

Ant Download Manager

Internet Explorer

Vivaldi Browser

Google Chrome

Yandex.Browser

Opera

Brave

Firefox

Download manager: support Generators Premium Links (Debrid) - Browser Integration - Capturing videos/Video Grabber- Drag&amp;Drop - Multilingual.

Apps with 'Shutdown after completing Option' feature

Defraggler

Persepolis Download Manager

Auslogics Disk Defrag

iGetter

Ant Download Manager