RSS Feed

Please wait while my feed loads

See more posts...


Subscribe to either one of our two newsletters for regular updates and information

Downloads newsletter

This is a weekly newsletter with download news, updates and other information

This is a monthly newsletter with software store information, offers and deals

O&O Defrag Professional 19.0.99

Ramp up your PC's performance with this very configurable defrag tool

by Mike Williams

Our Rating:
Your Rating:
Login to rate
Based on 0 ratings
License: Trial Software
Operating Systems: Windows 10, Windows 7 (32 bit), Windows 8, Windows Vista (32 bit)
Languages: English
Software Cost: Free
Date Updated: 15 October 2015
Watchlist: Add download to my watchlist
Downloads To Date: 993
Developer: O&O Software
RSS News Feed:
Twitter Feed:!/oosoftware
Buy O&O Defrag 18 Professional license for only $23.95, saving 20% from MSRP, whilst stocks last, only from
O&O Defrag (32-bit)
Ramp up your PC's performance with this very configurable defrag tool

O&O Defrag is a powerful and highly configurable hard drive defragmentation package.

At first the program looks much like any other defrag tool. Launch it, and you'll be presented with a list of your drives. Selecting one displays the usual mosaic-style map of its file layout. Then click Start and just watch as O&O Defrag reorganises its files to deliver the maximum possible performance.

This is just the start, though. Do you have multiple drives, for example? Select as many as you like and the program can defragment them all, simultaneously.

You don't have to use one particular defrag strategy, either. Instead you can have your files organised by their file name, access date, last modified date and more, whatever best suits your needs. Or if that's not enough then you can set up an entirely custom layout scheme which optimises Windows, application files and your user data to deliver the best possible system performance.

As you might guess, this probably isn't the best choice for the PC novice. But it's not overly complex, either. Once you've set O&O Defrag to work as you'd like, it'll run mostly in the background, defragmenting your hard drive automatically as required, while you get on with other things. And because it's so light on resources, and can be configured not to run at all if your system is busy or other heavy-duty programs are running, it's most unlikely to ever get in your way.

What's new in v19?

- O&O DiskCleaner locates and removes junk files
- Improved SSD handling
- Fully Windows 10-compatible


O&O Defrag is a powerful and very configurable defrag tool, that will not only correct existing fragmentation problems, but also automatically optimise your hard drive in real time to prevent them from reoccurring in the future

Your Comments & Opinion

Retail price for v17 is $29.95

Posted by: Marc P, 26 September 2013 12:32

The official retail price for O&O Defrag version 17 is actually $29.95 and not $19.99 as shown in this article currently. That may have been an older price for a previous version. reply:

Hi Marc, the $19.99 price referred to in the article is the price we're selling Defrag 17 from the Downloadcrew Software Store. See for more info.

Related Download Articles
Auslogics Disk Defrag

Auslogics Disk Defrag

Free, for personal-use only

Keep your hard drive in top condition with this powerful disk defragmentation tool

Defraggler 2.19

Defraggler 2.19


Optimise your hard drive's performance with this fast and free defragger

Defraggler 2.19

Defraggler Portable 2.19


Keep your drive in shape by running checking for fragmentation with this defrag tool

Diskeeper 12 Home

Diskeeper 12 Home (v16.0.1017)

Trial Software

Keep your hard drives running at their peak performance with this powerful defrag tool

Diskeeper 12 Professional

Diskeeper 12 Professional (v16.0.1017)

Trial Software

Keep your hard drives running at their peak performance with this powerful defrag tool

Puran Defrag Free Edition

Puran Defrag 7.7 Free

Free, for personal-use only

Improve your PCs performance with this highly configurable defrag tool

IObit Smart Defrag 4.3

Smart Defrag


Automatically defragment your hard drive to ensure it's always running at peak performance

Uniblue MaxiDisk 2013

Uniblue MaxiDisk 2013 v1.0.3.10

Trial Software

Take care of your hard drive with this handy utility

Other Download Articles From This Category

MMCSnapInsView 1.0


Discover all the MMC snap-ins on your system

ChrisPC Win Experience Index

ChrisPC Win Experience Index 4.10

Free, for personal-use only

Access the Windows Experience Index in Win 10


QuickMove 2.0.5


Quickly get your PC organised with this handy file management tool


DiskPulse Free 8.0.26


Monitor file and folder changes on your hard drive in real time

From Softwarecrew

Please wait while my feed loads

See more posts...

Our Price: $19.99
RRP: $29.95
Saving 33%
Buy Now
Offer Ends In:

Spotlight: Free Full Software

WhatsApp Messenger 2.12.11

Free Full Commercial Software

WhatsApp Messenger is the world's most popular instant messaging app for smartphones.

You can use it to send and receive text and voice messages, photos, videos, even call your friends in other countries, and because it uses your phone's internet connection it might not cost you anything at all (depending on whether you'll pay data charges).

It's easy to set up and use. There's no need to create and remember new account names or pins because it works with your phone number, and uses your regular address book to find and connect you with friends who use WhatsApp already.

You can talk one-to-one or in group chats, and because you're always logged in there's no way to miss messages. Even if your phone is turned off, WhatsApp will save your messages and display them as soon as you're back online.

There's plenty more (location sharing, contact exchange, message broadcasting) and the app is free for a year, currently $0.99/ year afterwards.

Version 2.12.11 brings:

• Links that you share or receive will now include a rich preview. When sending a link, you have the option to not include a rich preview.
• Additional 3D Touch features: You can now quickly Peek and Pop chats.
• Redesigned Settings tab. 
• You can now view all your starred messages across all your chats in Settings — Starred Messages.