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FlaUI

Free plan Windows

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FlaUI's own site

What FlaUI is

FlaUI is a free .NET library for automating tests of Windows desktop applications, including Win32, WinForms, WPF, and Store Apps. It wraps Microsoft’s native UI Automation libraries and lets developers choose between UIA2 and UIA3. Its helper class can launch, attach to, or close applications, while automation elements let users find and interact with interface controls. When the wrappers do not cover a case, FlaUI exposes native objects. Developers can install the relevant UIA2 or UIA3 assembly from NuGet, or download and compile the source. The project uses the MIT License, which permits use, modification, distribution, and sale subject to its conditions. UIA2 lacks newer features such as touch and is not a good fit for WPF or Windows Store Apps. UIA3 may have bugs with WinForms applications that do not occur with UIA2. The README points users to Gitter for questions and GitHub for issue reports and pull requests; the license disclaims warranties and liability.

Who it suits

FlaUI suits developers who automate tests of Windows desktop applications. It is for desktop use on Windows.

What it does well

  • Free, MIT-licensed .NET library.
  • Supports Win32, WinForms, WPF, and Store Apps.
  • Choose between UIA2 and UIA3.
  • Helpers can launch, attach to, or close applications.
  • Available through NuGet or source compilation.

What to know first

  • UIA2 lacks newer features such as touch.
  • UIA2 is a poor fit for WPF and Store Apps.
  • UIA3 may have bugs with WinForms.

Limits

UIA2 does not support newer features such as touch and does not work well with WPF or Windows Store Apps. UIA3 can have bugs with WinForms applications that are not present in UIA2.

Plans

PlanBilled and limitsPrice
FlaUIMIT-licensed .NET UI automation library · UIA2 and UIA3 NuGet packagesFree

As github.com lists them, read 4 Oct 2026. The maker's own page has the final word.

Getting started

  1. Visit the FlaUI project on GitHub.
  2. Install the appropriate UIA2 or UIA3 assembly from NuGet.
  3. Alternatively, download and compile the source.
  4. Use the helper class to launch an application or attach to one that is already running.

Verdict

FlaUI provides a choice of automation frameworks and tools for working with Windows application interfaces. Check the UIA2 and UIA3 limitations against the applications you need to automate.

Questions

How much does FlaUI cost?

FlaUI is free, with a listed price of $0.

Which Windows applications does FlaUI support?

It is for automated UI testing of Win32, WinForms, WPF and Store Apps.

Can I choose between UIA2 and UIA3?

Yes. FlaUI lets developers choose either option, and the maker directs users to install its corresponding assembly from NuGet.

What are the limitations of UIA2 and UIA3?

UIA2 lacks newer features such as touch and does not work well with WPF or Windows Store Apps. UIA3 can have bugs with WinForms applications that UIA2 does not.

What license does FlaUI use?

FlaUI is distributed under the MIT License, which permits use, modification, distribution and sale subject to its conditions.

Where can I get help or contribute?

The README points users to a Gitter chat for questions and invites issue reports and pull requests through GitHub.

Facts from FlaUI's own pages

Application control
Its helper class can launch, attach to, or close applications. · github.com, 4 Oct 2026
Automation choices
The library lets developers choose between UIA2 and UIA3. · github.com, 4 Oct 2026
Distribution
The maker directs users to install the appropriate UIA2 or UIA3 assembly from NuGet, or download and compile the source. · github.com, 4 Oct 2026
Element interaction
Users can search an application’s UI elements and interact with them through automation elements. · github.com, 4 Oct 2026
Intended users
The README describes FlaUI as a library for developers who automate tests of Windows desktop applications. · github.com, 4 Oct 2026
License
The project is distributed under the MIT License, which permits use, modification, distribution and sale subject to its stated conditions. · github.com, 4 Oct 2026
Purpose
FlaUI is a .NET library for automated UI testing of Windows applications, including Win32, WinForms, WPF and Store Apps. · github.com, 4 Oct 2026
Security and warranty
The MIT license provides the software “as is” and disclaims warranties and liability. · github.com, 4 Oct 2026
Support
The README points users to a Gitter chat for questions and invites issue reports and pull requests through GitHub. · github.com, 4 Oct 2026
UIA2 limitation
The README says UIA2 does not support newer features such as touch and does not work well with WPF or Windows Store Apps. · github.com, 4 Oct 2026
UIA3 limitation
The README says UIA3 can have bugs with WinForms applications that are not present in UIA2. · github.com, 4 Oct 2026
Underlying technology
It wraps Microsoft’s native UI Automation libraries and exposes native objects for cases its wrappers do not cover. · github.com, 4 Oct 2026

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