[ Desktop app types ]
A Windows app breaks for users without admin rights. A Mac app is blocked by Gatekeeper. A till stops when the receipt printer is unplugged. We start with the risks that belong to your type of app, and test those first.
Apps built for Windows with Microsoft’s own frameworks.
We test first
Apps built for the Mac with Apple’s own tools.
We test first
Apps for Ubuntu, Fedora and other Linux desktops.
We test first
One codebase that ships to Windows, macOS and Linux.
We test first
Business-critical apps that staff use all day.
We test first
Editors, design tools and office-style apps.
We test first
Checkout, ordering and self-service apps on dedicated hardware.
We test first
Heavy apps for models, simulations and data analysis.
We test first
Apps that talk to scanners, sensors, cameras or other devices.
We test first
Apps that work without internet and sync when back online.
We test first
[ What we test ]
A desktop app lives on someone’s machine for years. We group our testing into five layers, so you can see exactly which part of your app each test covers.
What users see and do
Every feature, menu, dialog and workflow checked against your requirements.
More on this service →Layouts, fonts, themes and shortcuts checked, and real tasks tried to find where people get stuck.
More on this service →Screen readers, full keyboard use, focus order, contrast and text scaling checked.
More on this service →Translations, dates, number formats, keyboard layouts and right-to-left layouts checked.
What it runs on
Your app checked on the operating system versions, processors and machine specs your users have.
Start-up time, memory use, CPU load and long sessions measured, including memory leaks.
More on this service →Windows, dialogs and text checked across monitors, resolutions, 4K screens and scaling settings.
What it talks to
Connections to your APIs, databases, the file system, printing and other apps checked end to end.
Scanners, printers, card readers and other USB devices connected, disconnected and swapped mid-task.
Working with no connection, then syncing safely without losing or duplicating data.
What keeps it safe and paid for
Stored data, file permissions, code signing, update channels and privilege use checked.
More on this service →Trials, activation, seat limits, expiry and reactivation after reinstall or hardware change.
Install, update, upgrade
Installers, silent installs, repairs and uninstalls checked, so nothing is left broken or behind.
Update prompts, background downloads, staged rollouts and rollback of a bad update.
Upgrades from older versions checked, with settings and user data carried over safely.
[ OS & environments ]
Desktop bugs often depend on the machine: its OS version, user rights, security software or screens. We test on the setups your users have, starting from a clean machine every time.
[ Process & deliverables ]
You always know what we’re doing and what you’ll get. Every deliverable belongs to you.
We learn your app, users and goals: builds, installers, licence keys, user data and the OS versions in use.
We agree the OS and environment matrix and write test cases for each workflow and layer.
Manual and automated testing on clean, real and virtual machines, with bugs logged as they’re found.
Performance, security and accessibility testing where your scope includes them.
Installers, updates and upgrades tested end to end, fixes retested and the release signed off.
[ Tools ]
We pick tools to fit your stack, and we’re happy to work with the ones you already use.
See the full list on our technology stack page →
[ What clients say ]
The same team, process and reporting stand behind every platform we test.
“QAonTOP has provided at least 20 times the value. Their testing service is outstanding and has greatly streamlined our process.”
“QAonTOP’s Testing Services provided weekly reports and shared their daily progress through Jira, ensuring a transparent workflow. They delivered everything on time and communicated effectively throughout.”
[ Ways to work ]
Choose the engagement model that matches how you build and release. You can switch models as your product grows.
Not sure which fits? Find your model in four questions or compare all six.
[ FAQ ]
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[ Contact us ]
✓ Free one-week POC✓ NDA before access✓ A QA lead replies the same day
[ Keep exploring ]
Every browser, device and layer
02iOS, Android and wearables on real devices
03Every endpoint and service in between
04Tenancy, billing, scaling and releases
05Pipelines, migrations and reports
06Accuracy, guardrails and agents
Also useful: All testing services · Fixed-price packages · Estimate your QA cost
