Every European PC optimization software tool reviewed
Rastede, Germany
Founded 1999
Free edition; Pro $14/year (3 PCs) or $20 one-time
Free edition and 30-day trial
Best for: Windows users who want one suite for cleanup, startup and privacy settings
Ashampoo GmbH & Co. KG has been making Windows software in Rastede, Lower Saxony, since 1999, and WinOptimizer is the product that most directly covers what Advanced SystemCare, CCleaner and similar suites do: disk and browser cleanup, a startup manager, registry cleaning, Windows privacy and telemetry settings, and a set of smaller tools for services, context menus and file shredding.
The licensing is the unusual part. There is a free edition, a 30-day trial of the Pro version, a yearly subscription covering three PCs, and a one-time licence for a single PC — the last of which has become rare in this market. Ashampoo also sells a separate Driver Updater and UnInstaller for those who want the individual pieces.
What Ashampoo WinOptimizer does well
- German company with a published impressum and commercial register entry
- Free edition, 30-day trial and a one-time licence option
- Covers cleanup, startup, privacy settings and tuning in one suite
- Separate Driver Updater and UnInstaller available
Where Ashampoo WinOptimizer falls short
- Windows only
- Ashampoo's prices are almost always shown as discounts from a much higher list price
- The number of modules can feel like more than most PCs need
Standout feature. A one-time licence for a full optimization suite, from a company with a German commercial register entry, in a market that has almost entirely moved to auto-renewing subscriptions.
Limassol, Cyprus (MacPaw founded in Kyiv, Ukraine)
Founded 2008
From €39.95/year (1 Mac)
Free trial, 30-day money-back
Best for: Mac users who want the most complete cleanup and maintenance app
CleanMyMac comes from MacPaw, founded in Kyiv in 2008, and is sold under terms that name MacPaw Way Ltd. in Limassol, Cyprus, as the contracting party with Cypriot law and courts. It covers hidden system junk, large and forgotten files, duplicate photos, uninstalling apps with their leftover data, memory and CPU load, app updates and a malware scan, and it is notarized by Apple.
The caveat is in MacPaw's own privacy policy, which lists storage and processing in Cyprus, the United Kingdom, the United States and Ukraine. The cleaning runs locally; the account, licence and analytics data are what travel. Pricing starts at €39.95 a year for one Mac, with a free trial and a 30-day money-back guarantee.
What CleanMyMac does well
- Most complete Mac cleanup app in this category, malware scan included
- Notarized by Apple
- Contracting entity in the EU (Cyprus)
- Free trial and 30-day money-back guarantee
Where CleanMyMac falls short
- Privacy policy lists US and UK storage alongside Cyprus and Ukraine
- Yearly subscription as the main model
- Mac only
Standout feature. The only Mac tool in this category that covers cleanup, uninstalling, maintenance and malware scanning in one app, sold by an EU entity.
Ruse, Bulgaria
Founded 2007
Free edition; Pro $24.95 list (perpetual licence)
Free edition, 60-day money-back
Best for: Anyone whose real problem is software that will not uninstall cleanly
Revo Uninstaller is made by VS Revo Group Ltd. in Ruse, Bulgaria, and has been since 2007. It does one job: it runs a program's own uninstaller and then scans for the files, folders and registry entries that uninstaller left behind, which on a Windows machine that has been in use for a few years is where much of the clutter comes from.
There is a free edition, and Revo Uninstaller Pro is sold as a lifetime licence with a year of updates included, at a list price of $24.95, plus a portable edition licensed for unlimited PCs. The vendor offers a 60-day money-back guarantee, the longest in this category.
What Revo Uninstaller does well
- Does one job — removing leftovers — and does it thoroughly
- Free edition available
- Pro is a lifetime licence, not a subscription
- 60-day money-back guarantee
Where Revo Uninstaller falls short
- Not a full optimization suite: no privacy tuning or disk cleanup suite around it
- Windows only
- Updates beyond the first year cost extra
Standout feature. A lifetime licence and a 60-day money-back guarantee on the tool that fixes the thing optimizers usually only report: software that never fully left.
Berlin, Germany
Founded 1997
ShutUp10++ free; O&O Defrag Pro €49.90 list (perpetual)
Freeware and trial versions
Best for: Windows users who want targeted, well-established tools rather than a suite
O&O Software GmbH in Berlin has been making Windows system software since 1997. Two of its tools matter here. O&O ShutUp10++ is freeware that lays out Windows 10 and 11 telemetry and privacy settings as individual switches with a recommendation for each, and it is still maintained for current Windows 11 builds. O&O Defrag is a defragmentation and drive-optimization tool sold as a permanent licence.
Neither tries to be a one-click optimizer, and that is the point. ShutUp10++ addresses the privacy side of what suites like Advanced SystemCare bundle, and Defrag the disk side, each with more control than a suite gives.
What O&O Software does well
- O&O ShutUp10++ is free and actively maintained
- O&O Defrag is a permanent licence
- Berlin company with a published impressum
- Clear, per-setting explanations rather than a single "fix" button
Where O&O Software falls short
- Separate tools rather than one suite
- Windows only
- Defragmentation matters little on SSD-only machines
Standout feature. O&O ShutUp10++: a free, maintained, German tool that shows every Windows telemetry setting individually and lets you decide.
Ganderkesee, Germany
€29.95
30-day test version
Best for: Windows users who want a simple tuner from a small German vendor
Abelssoft is the trading name of Ascora GmbH in Ganderkesee, Lower Saxony, which says it has been developing Windows software since 1994. PC Fresh is its tuning tool: startup management, background services and system settings aimed at making Windows boot and respond faster, with a simpler interface than the larger suites.
The full version is €29.95 with at least six months of free updates, and there is a 30-day test version. Abelssoft sells a separate cleaner, WashAndGo, for disk and browser cleanup, so PC Fresh alone is narrower than WinOptimizer.
What Abelssoft PC Fresh does well
- German company with a published impressum
- Simple, focused interface
- 30-day test version
- No subscription required for the full version
Where Abelssoft PC Fresh falls short
- Narrower than a full suite; cleanup is a separate product
- Update period of the licence is only stated as "at least 6 months"
- Windows only
Standout feature. A deliberately small tuning tool from a small German vendor, for people who want fewer switches rather than more.
Stockholm, Sweden
Founded 2013
$29/year or $59 one-time (3 Macs)
Free download, 14-day refunds
Best for: Mac users who want monitoring and cleanup with a one-time licence
Sensei is made by Cindori AB, registered in Stockholm in 2013. It combines cleanup and an uninstaller with hardware monitoring — a thermal dashboard for temperature sensors and fans, a S.M.A.R.T. drive health report, battery health and live CPU and GPU statistics — which makes it as much a dashboard for the Mac as a cleaner.
It costs $29 a year or $59 once, each covering up to three Macs, with a free download and 14-day refunds. Payments go through Paddle, and the privacy policy names Sentry and Amplitude and says data may be stored outside the European Union.
What Sensei does well
- One-time licence option covering three Macs
- Hardware and SSD health monitoring alongside cleanup
- Swedish company
- Free download to try
Where Sensei falls short
- Privacy policy allows storage outside the EU and names US analytics tools
- Smaller feature set than CleanMyMac for pure cleanup
- No address published on the vendor's own site
Standout feature. The only tool here that treats the Mac's hardware health as part of maintenance, with a one-time licence for three Macs.
France
Founded 2003
Free (donations)
Free
Best for: Mac users comfortable with a technical tool who want to pay nothing
OnyX has been published by Titanium Software in France since 2003 and is free, supported by donations. It verifies the structure of the system files, runs cleaning and maintenance tasks, deletes caches, rebuilds databases and indexes, uninstalls applications, and exposes settings in the Finder, Dock, Safari and other Apple apps that would otherwise need the command line. A separate version is released for each macOS version, including macOS 27 in September 2026.
It is a technical tool and makes no attempt to look like a consumer app. It also has no company behind it that we could find: the privacy policy names a person and the French regulator, but no registered entity. With no account, no licence server and no subscription, there is also very little to hold.
What OnyX does well
- Completely free
- No account and no licence server
- Released for each new macOS version
- Runs the maintenance macOS hides
Where OnyX falls short
- Technical interface aimed at experienced users
- No registered company found behind it
- No malware scan or duplicate finder like CleanMyMac
Standout feature. Free, account-free Mac maintenance that has been kept current with every macOS release since 2003.
Trier, Germany
Free edition; Personal €20.40/year; Professional from €40.80/year (both with a 14-day trial)
14-day trial (Personal and Professional editions)
Best for: IT admins and power users who need to see disk usage fast
TreeSize is a disk-space analyzer from JAM Software GmbH in Trier, Germany, and has been used by millions worldwide for over 25 years.
It scans a drive once and shows what is filling it in a treemap, pie chart or sortable list, so the folder eating 40GB stops hiding three levels down. Duplicate detection, bulk delete, move and rename, and scheduled PDF, Excel or CSV reports round it out, and the whole thing runs on-premise with no cloud dependency — nothing it scans ever leaves the machine.
There is a genuinely free edition for home, non-commercial use, alongside a Personal edition at €20.40 a year for freelancers and small businesses, and a Professional edition from €40.80 a year for IT administrators who need to run it across a whole server estate. Both paid tiers carry a 14-day trial. JAM Software GmbH's own imprint names a Handelsregister entry in Trier (HRB 4920) and a German VAT ID, rather than a support address behind an anonymous brand.
TreeSize does one job and does not try to be a suite. It will not clean the registry, manage startup programs or tune Windows privacy settings the way Ashampoo WinOptimizer or O&O ShutUp10++ do; what it does is tell you, precisely and quickly, where your disk space actually went, which is the step every other cleanup tool in this category skips past on its way to a single "optimize" button.
What TreeSize does well
- Genuinely free edition for home use
- Treemap view finds space hogs in seconds
- Duplicate finder and scheduled reports built in
- On-premise, no cloud dependency
- German company with a published Handelsregister entry
Where TreeSize falls short
- Windows only
- Personal and Professional editions are yearly subscriptions
- No cleanup automation beyond what you choose to delete
- No macOS version
Standout feature. A treemap that finds the actual space hog in seconds, from a German company that has shipped it for 25 years.
Bucharest, Romania
Founded 1997
Free version installs up to 2 drivers/day; Pro from $4.95/month, $10.39/year (list $20.78), or $29.80 lifetime (list $149); $270 lifetime for unlimited PCs
Free version with a 2-driver-per-day cap; no account required
Best for: Windows users who want every driver current, one click
DriverMax is made by Innovative Solutions, founded in Bucharest, Romania in 1997, and it is the direct European answer to IObit's Driver Booster.
It scans installed hardware against its own driver catalogue, working out which version actually belongs on your machine rather than always grabbing the newest one, and shows how a given driver package went for other users before you install it — a safety check IObit's own installer does not offer. Every driver it replaces is archived, and Windows creates a restore point before each install, so a bad update is reversible.
The scan and up to two driver installs a day are free, with no account and no sign-up. A licence removes that daily cap: $4.95 for a month, $10.39 for a year (list $20.78), or $29.80 for a lifetime licence (list $149) that never renews. A separate lifetime licence covering unlimited PCs in a household or workshop is $270. DriverMax's own terms and conditions are explicit that Romanian law and the Romanian courts govern the agreement.
Nothing else in this category updates drivers specifically — Ashampoo, O&O and Abelssoft clean, tune and defragment, but none of them touch the driver stack the way IObit's Driver Booster does. DriverMax fills that gap from an EU-established vendor instead, with a catalogue built from more than 2,300,000 devices and a business model that does not depend on a red "errors found" counter to sell the upgrade.
What DriverMax does well
- Shows how an update went for other users before you install it
- Free version: unlimited scans, 2 installs/day, no account
- Every replaced driver archived, with a Windows restore point
- Lifetime licence option, no forced renewal
- Romanian company, explicitly under Romanian law and courts
Where DriverMax falls short
- Free tier capped at two installs a day
- Windows only
- No cleanup, uninstall or defrag features outside drivers
- List prices only become visible once a discount is applied at checkout
Standout feature. Shows how a driver update went for everyone else before you install it — a safety check IObit's own tool does not offer.
Freiburg, Germany
Founded 1994
Advanced 3-PC perpetual licence $79.95, or 1-PC subscription $19.95 first year (then $24.95/year)
Free trial download
Best for: Windows users who need partitioning, cloning and backup in one
Paragon Technologie GmbH has made disk-management software in Freiburg, Germany since 1994, and Hard Disk Manager Advanced is its consumer suite: a partition manager that resizes, merges, splits and converts partitions and file systems (including FAT↔NTFS and NTFS↔HFS), a backup and recovery tool with scheduling, encryption and compression, a Drive Copy tool that clones a whole disk or migrates a running system to a new drive without rebooting, and a Disk Wiper for secure erasure with SSD TRIM support.
It is not a one-click cleaner like the rest of this grid; it is closer to what EaseUS Partition Master or MiniTool Partition Wizard do on Windows, aimed at someone replacing a drive, repartitioning a dual-boot machine or standardising backups across a small office. A 3-PC perpetual licence costs $79.95 with no renewal, or a single-PC subscription runs $19.95 the first year, then $24.95. A free trial download is available before buying either.
Paragon's own imprint names Paragon Technologie GmbH, registered at the Amtsgericht Freiburg under HRB 300575, with a German VAT ID — the same level of transparency as O&O and Ashampoo elsewhere in this category, for a job, disk and partition management, that none of the cleanup-and-tuning suites already in this grid actually cover.
What Paragon Hard Disk Manager does well
- Partitioning, backup, cloning and secure wipe in one suite
- Perpetual 3-PC licence available, no forced subscription
- Live disk cloning without a reboot
- German company registered at Amtsgericht Freiburg since 1994
- Free trial before buying
Where Paragon Hard Disk Manager falls short
- Not a cleaner: no registry, startup or privacy tuning
- Consumer pricing shown in USD, not EUR, on the international site
- Windows only
- Interface is utilitarian, not styled for consumers like WinOptimizer
Standout feature. The only tool in this grid that repartitions, clones and backs up a whole disk, with a perpetual licence option.
Kretz, Germany
Founded 1998
Single-user licence €30 (≈$36) incl. tax, down to €15 for 20+ units; site licence €375; global licence €720
Free, fully functional trial download before purchase
Best for: Mac admins who want hidden settings and real repair tools
TinkerTool System 10 is made by Marcel Bresink Software-Systeme, a one-person German software house in Kretz, near Koblenz, that has published Mac utilities since 1998. It is the paid, deeper sibling of the free TinkerTool: built-in macOS maintenance routines Apple hides from the interface, extended file operations the Finder cannot do, advanced system settings with no graphical control panel, and a First Aid mode that can troubleshoot and repair macOS when the normal user interface will not start.
Unlike CleanMyMac or Sensei, TinkerTool System is not sold as a subscription: a single-user licence is €30 (about $36) including tax, with volume pricing down to €15 a seat for 20 or more, and site and global licences for organisations. New major versions are optional paid upgrades rather than automatic renewals, and the current release can be downloaded and fully tested before you decide to buy.
It fills the gap OnyX leaves in this category: OnyX is free but has no registered company we could find behind it, while TinkerTool System is a paid, commercially operated German product covering much of the same ground — cache cleaning, Finder tweaks, hidden preferences — plus emergency repair tools and hardware diagnostics that OnyX does not attempt, for anyone who wants a maintained, paid alternative with a real company behind the support address.
What TinkerTool System does well
- Deep macOS maintenance and hidden settings in one toolbox
- Emergency boot and repair mode for a broken system
- Free, fully working trial before you buy
- One-time licence per major version, not a subscription
- German company with a published imprint and VAT-relevant details
Where TinkerTool System falls short
- €30 minimum for a single licence, where OnyX is free
- Major version upgrades are paid separately
- Interface aimed at technical users, not a consumer-styled cleaner
- macOS only
Standout feature. A paid, commercially operated alternative to OnyX, with an emergency repair mode for when macOS will not start at all.
United Kingdom
Founded 2006
7-day free trial
Best for: Anyone whose disk is full of the same file twice
Duplicate Cleaner is made by DigitalVolcano Software Ltd, a UK-registered company that has published Windows utilities since 2006. It deep-scans a drive or network share for redundant files of any type, then goes further than a simple checksum match: photos are compared even after cropping, rotation or resizing, music is matched by audio content or tags, and video is matched by frames, soundtrack or metadata, with a Selection Assistant to help pick which copies to keep.
Duplicate Cleaner Pro 5 is a perpetual licence — no subscription — priced in your local currency at checkout, with a 7-day free trial and a site-licence option for businesses running it across many machines at one location. DigitalVolcano's own privacy policy states plainly that the company is UK-registered, which puts it outside the EU and EEA under the United Kingdom's adequacy decision rather than direct GDPR membership.
None of the other tools in this category treat duplicate-finding as their main job; O&O, Ashampoo and Abelssoft fold something similar into one feature among many inside a broader cleanup suite. For a Windows user whose actual problem is thousands of duplicate photos or a music library copied twice during a laptop migration, that single focus is the whole appeal.
What Duplicate Cleaner Pro does well
- Matches photos, music and video by content, not just file name
- Perpetual licence, no subscription required
- Free 7-day trial
- Site licence available for multiple installs at one location
- UK-registered company, publishing software since 2006
Where Duplicate Cleaner Pro falls short
- United Kingdom, outside the EU and EEA
- Exact price only shown at checkout, not on the price page itself
- Windows only
- Narrower than a full cleanup suite: duplicates only
Standout feature. Matches near-identical photos and re-encoded videos, not just files with the same name and size.
London, United Kingdom
Founded 2009
$2.99 one-time purchase via the Mac App Store
Best for: Mac users who want a cheap, one-click cache cleanup
Disk Doctor comes from FIPLAB Limited, a Mac and iOS developer that has worked from London since 2009 and publishes more than a dozen small utility apps. It scans a Mac for application caches and logs, browser data, old Mail downloads and files over 100MB, and clears them in a few clicks; the same team's wider catalogue covers memory management, duplicate detection and disk mapping, but Disk Doctor itself stays a single, narrowly scoped cleanup tool.
It is sold through the Mac App Store only, as a one-time $2.99 purchase rather than a subscription or a freemium upsell — a fraction of what CleanMyMac or Sensei charge for a much broader feature set. Its 2013 MacWorld "Mac Gem" award is now more than a decade old, which says as much about how long the app has been kept current as about its original design.
Disk Doctor is not a substitute for CleanMyMac's malware scanning or Sensei's hardware monitoring, and it does not try to be. For a Mac that just needs its caches and old downloads cleared out occasionally, it is the cheapest, simplest way into this category, from a company with a published UK registration behind it rather than an anonymous App Store listing.
What Disk Doctor does well
- One-time $2.99 purchase, no subscription
- Removes caches, logs, Mail downloads and large files fast
- Simple and narrowly scoped: nothing to configure
- UK company (FIPLAB Limited) publishing Mac utilities since 2009
- Distributed through the Mac App Store, so no separate account needed
Where Disk Doctor falls short
- No malware scanning or hardware monitoring like CleanMyMac or Sensei
- United Kingdom, outside the EU and EEA
- App Store distribution only, no direct-download trial to test first
- Much narrower feature set than the paid Mac suites in this grid
Standout feature. A $2.99 one-time Mac App Store purchase, next to Mac cleanup suites that charge a yearly subscription.
