The best free system utilities 2017

Optimize your settings for a faster PC with the best free system utilities for Windows

Free system utilities

A PC or Mac is rather like a car. That showroom-fresh saloon doesn't seem so sleek and shiny once road film, suicidal insects and evil supermarket car park users start ruining it, and that speedy new computer soon begins to sag under the stress of unnecessary apps, unwanted add-ons and other irritations. Thank crikey, then, for system utilities and tools: the right ones make your PC or Mac feel brand new, or at least an awful lot faster and a lot less crashy.

There are thousands of system utilities out there, but these are our favourites - although as with any freeware, be very careful when you're installing any of them. Many free apps' installers are awfully keen on giving you extra software, toolbars or changes to your search engine that you might not want - see our guide to avoiding potentially unwanted programs.


CCleaner the best free system utilities

Piriform's excellent CCleaner analyses your PC for files you can live without and deletes them for a performance boost

1. CCleaner

Download CCleaner free

Remove unneeded files for a quick and easy speed boost, plus improved security

CCleaner has been around for a long time, and part of the reason for its ongoing popularity is that it cleans the parts of your PC that many other free system utilitites don't.

There are paid-for versions that add real time protection and cleanup scheduling, but the free edition covers the important stuff such as removing temporary files, getting rid of browser caches, removing unwanted cookies while keeping the useful ones and so on.

If your PC feels slow or sluggish then this is the system utility to try first. Thanks to its huge array of features and deep scans, CCleaner is the best free system utility for Windows.

Download here: CCleaner


PC Decrapifier

The superbly-named PC Decrapifier is ideal for removing unwanted programs that come pre-installed on a new Windows PC

2. PC Decrapifier

Download PC Decrapifier free

Uninstall the junkware that comes with a new PC to get the performance it should be delivering

Like CCleaner, PC Decrapifier's job is to remove unnecessary files and programs for your PC. It's particularly useful on brand new PCs, which are often either full of exciting opportunities to discover new apps or stuffed to the gills with a load of preinstalled junk, depending on your point of view.

Free system utility PC Decrapifier analyses your system, shows you the apps it thinks you should get rid of - based not just on its developers' opinions, but on other users' feedback - and then removes the ones you choose. It's so focused on cleaning PCs it doesn't even install itself. One of the tidiest system utilities around.

Download here: PC Decrapifier



Autoruns lets you decide which programs and processes begin at the same time as Windows. Stopping any you don't need can result in faster boot times

3. Autoruns

Download Autoruns free

Stop unnecessary startup processes to speed up your Windows PC's boot times

We don't normally quote former US Secretary of Defense Donald Rumsfeld, but when he said "There are known knowns. These are things that we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know," he could have been describing the apps you know you're running – the known knowns – and the ones you don't.

The latter category of software runs when you boot Windows, or log in, or launch certain system tools. You can find and get rid of the known unknowns and the unknown unknowns with the superb system utility Autoruns.

Download here: Autoruns



You never know when you'll need Recuva - an emergency tool for restoring deleted files

4. Recuva

Download Recuva free

An essential system utility for recovering lost or accidentally deleted data from any storage media

There are lots of data recovery tools out there, but Recuva is our favorite. Not only can it recover files that have been deleted but not overwritten, this free system utility can recover files from removable media such as USB drives and memory cards.

It can even get data off damaged discs, although naturally the success rate depends on the kind and extent of the damage.

The paid-for Pro version adds support for virtual hard disks and offers technical support too, but the free one is worth sticking on a thumb drive as part of your emergency toolkit.

Download here: Recuva


3DP Chip

3DP Chip handles the hard work of tracking down hardware driver updates

5. 3DP Chip

Download 3DP Chip free now

A quick and convenient tool to keep your hardware drivers up to date for optimum performance

The near-infinite variety of possible Windows PC configurations is a great thing, but it can also lead to a great big pain in the backside: ensuring that the device drivers, the bits of software that Windows uses to communicate with your various bits of hardware, remain up to date.

It's worth doing because driver updates banish bugs, vanquish vulnerabilities and fix flaws, but it's not remotely quick or fun.

Enter 3DP Chip, a free system utility that can do the dirty work for you - and unlike some other driver update programs, it doesn't try to install a whole bunch of nonsense on your PC either.

Download here: 3DP Chip



If you're running out of drive space, SpaceSniffer identifies what's taking up all the room

6. SpaceSniffer

Download SpaceSniffer free

A free system utility that finds out what's taking up so much space on your hard drive or SSD

You're running out of space but you've no idea why. Does that sound familiar? Then you need free system utility SpaceSniffer, which enables you to see what's taking up space in a format known as a treemap.

It's a very immediate way to understand where the space hogs are on your system, and the filtering means you can limit the visualisation to certain kinds of files or to exclude certain kinds of files. You can also combine filters to look for space hogs of a particular kind or vintage.

Download here: SpaceSniffer


Auslogics Duplicate File Finder

Auslogics Duplicate File Finder identifies and remove redundant files from your hard drive to free up valuable space

7. Auslogics Duplicate File Finder

Download Auslogics Duplicate File Finder free

Find and delete redundant files to free up valuable space on your hard drive or SSD

One of the downsides of digital media is that it's very easy to end up with multiple copies of the same thing taking up valuable storage space. That's bad enough on a hard disk, but on the more limited space of an SSD it's even more of a problem - or at least, it is if you don't have Auslogics Duplicate File Finder.

This free system utility scans your PC for duplicate files and enables you to restrict the search to specific file types or sizes, and you can specify whether duplicates should be binned or placed in a holding area for you to check them out. This is a great and genuinely useful app for Windows users of all kinds.

Download here: Auslogics Duplicate File Finder


Revo Uninstaller

Get rid of the bits other uninstallers leave behind with Revo Uninstaller Free

8. Revo Uninstaller Free

Download Revo Uninstaller Free

Remove all traces of uninstalled programs to avoid junk buildup from orphaned files

If you like trying new apps you'll be horribly familiar with the joys of built-in software uninstallers, which all too often leave bits and pieces everywhere. It's a particular pain when a program comes with additional tools like browser toolbars and unwanted 'helper' apps, which then have to be removed separately.

Revo Uninstaller Free is a free system utility that solves the problem by scanning for the bits the standard uninstaller often leaves behind, and its multiple uninstall option means it's a big time saver too. The free version can't uninstall apps that were on your PC before you installed it, but it does a good job of getting shot of anything added since.

Download here: Revo Uninstaller Free


Secunia PSI

Secunia Personal Software Inspector automatically checks for new bug fixes and patches, and keeps your installed software up to date

9. Secunia Personal Software Inspector (PSI)

Download Secunia PSI free

Keep your software up to date with the latest essential bug fixes and security patches

Secunia PSI solves one of the biggest headaches for Windows users: keeping software up to date in order to keep your system secure. The free system utility knows about thousands of different programs and can scan your system to identify whether you have the most up to date versions.

And here's the best bit: if you don't, this free system utility can usually download and install the necessary updates and/or patches without any further intervention from you. The combination of PSI and Windows Update should ensure that malware can't exploit any vulnerabilities in unpatched software.

Download here: Secunia PSI



Onyx performs regular system maintenance to keep your Mac running like new

10. OnyX

Download OnyX free

A free system cleanup utility to keep Macs running quickly and smoothly

The majority of system tuneup and cleaning apps are for Windows, but Macs get messy too – and on macOS, the evergreen OnyX is often the solution.

It can get shot of bulging system logs and clean up files that are no longer needed, it can turn on hidden features in macOS itself and you can use it to schedule dull but useful maintenance tasks.

It has two companion system utilities, both also free: Deeper is purely for personalisation while Maintenance covers – yep – maintenance. For most people OnyX offers the best of both.

Download here: OnyX



Former lion tamer, Girls Aloud backing dancer and habitual liar Gary Marshall (Twitter, Google+) has been writing about tech since 1998, contributing sage advice and odd opinions to .net, MacFormat, Tap! and Official Windows Magazine as well as co-writing stacks of how-to tech books. "My job is to cut through the crap," he says. "And there's a lot of crap."