O&O Software

Berlin maker of the free O&O ShutUp10++ privacy tool and O&O Defrag, since 1997

Quick Overview

Company O&O Software GmbH
Category PC Optimization Software Alternatives
Headquarters Berlin, Germany
Founded 1997
EU Presence EU (Germany)
Data Location Runs locally on your PC
Open Source No
Pricing ShutUp10++ free; O&O Defrag Pro €49.90 list (perpetual)
Free Option Freeware and trial versions
Replaces IObit Smart Defrag

Detailed Review

Pros and Cons

Pros

  • 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

Cons

  • Separate tools rather than one suite
  • Windows only
  • Defragmentation matters little on SSD-only machines

Alternatives to O&O Software

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Frequently Asked Questions

What is O&O Software?

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.

Where is O&O Software based?

O&O Software operates from Berlin, Germany, which places it under EU (Germany).

What does O&O Software cost?

ShutUp10++ free; O&O Defrag Pro €49.90 list (perpetual). Freeware and trial versions.

Who is O&O Software best for?

Windows users who want targeted, well-established tools rather than a suite. O&O ShutUp10++: a free, maintained, German tool that shows every Windows telemetry setting individually and lets you decide.

What are the drawbacks of O&O Software?

Separate tools rather than one suite. Windows only. Defragmentation matters little on SSD-only machines.

Who worked on this review

Three people touch every tool page: one writes it, a second edits it, and a third checks the compliance and pricing claims against the vendor's own documentation.

Sebastiaan Smits
Written by

Sebastiaan Smits

Founder & Editor · Netherlands

Selects the tools, writes the reviews, and checks where each company is actually established.

Marta Kowalczyk
Edited by

Marta Kowalczyk

Senior Analyst, Infrastructure & Developer Tools · Warsaw, Poland

Covers hosting, developer tooling and the practical side of moving workloads to European providers.

Ingrid Halvorsen
Fact-checked by

Ingrid Halvorsen

Managing Editor · Oslo, Norway

Runs the review process and decides when a page is ready to publish or needs another pass.

Read our editorial process for how we source, verify and update these pages — and how we keep affiliate income separate from what we recommend.

Go to O&O Software