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The User-Agent (UA) string is contained in the HTTP headers and is intended to identify devices requesting online content. The User-Agent tells the server what the visiting device is (among many other things) and this information can be used to determine what content to return. Of course this requires using a device detection solution which translates UAs into understandable software and hardware information.

1. Gecko Mozilla
2. Gecko Mozilla Wiki
3. Mozilla Ftp Site Apk
4. Firefox Setup 52.6.0esr

Geckodriver is made available under the Mozilla Public License. Its source code can be found in mozilla-central under testing/geckodriver. This GitHub repository is only used for issue tracking and making releases.

User-Agent list for different device types

1. Mozilla announced the intent to deprecate ARMv7 HF builds of geckodriver in September 2018. This does not mean you can no longer use geckodriver on ARM systems, and this document explains how you can self-service a build for ARMv7 HF.
2. Think of it as harnessing the full power of Gecko (the engine that powers Firefox), while its API is WebView-like and easy to use. Suited for apps and browsers: GeckoView is particularly suited for building mobile browsers, but it can be embedded as a web engine component in any kind of app.
3. What is Gecko Driver? Gecko is a Web Browser engine used in various applications developed by Mozilla Foundation and the Mozilla Corporation. It is a proxy which is used to interact with the browsers that run on Gecko-based browsers like Firefox. Gecko driver is the link between your tests in Selenium WebDriver and Mozilla Firefox browser.
4. Building a browser? Check out Android Components, our collection of ready-to-use support libraries! The following article is a brief guide to embedding GeckoView in an app. For a more in depth tutorial on getting started with GeckoView please read the article we have published on raywenderlich.com.

There are millions of User-Agent combinations given that UAs change with the software and hardware. For example, a Chrome browser on an iPhone 6 will introduce itself using a different UA than a Safari browser on the same phone.

Every device type, including phones, tablets, desktops, may come with its own UA that makes it possible to detect this device for any purpose. Interestingly bots and crawlers also come with their unique UAs.

Here is a list of example User-Agents for different device types that can be detected. If you’d like to learn more on these devices, just copy and paste the UAs to our User-Agent testing tool. You’ll see all the properties of a detected device.

• E-Readers User Agents

Android Mobile User Agents

Gecko Mozilla

If you're wondering which devices are most common where you are, read our list of the world's most popular Android devices.

iPhone User Agents

Below are examples of User Agent strings used by the most popular iPhone devices. As Apple do not pass much info through the User Agent, version numbers don't allow us differentiate between iPhone models.

However, with DeviceAtlas client-side, you can classify these user agents to return correct device model.

Download our free e-book on User Agents to learn:

• What is a User Agent?
• How do you parse them?
• What can you do with them?

For more on how to detect exact iPhone 8/8 Plus and iPhone X models, read our guides on How To Detect iPhone 8/X and how to detect the latest iPhones - the XR, XS and XS Max.

MS Windows Phone User Agents

Tablet User Agents

If you're looking for a list of mobile browser user-agents, we've got them too - List Of Mobile Browser User-Agent Strings .

Desktop User Agents

For the web, native apps and mobile operator environments.

Set Top Boxes User Agents

Game Consoles User Agents

Bots and Crawlers User Agents

We've compiled a more in-depth list of User-Agent strings of the most active web crawlers and bots.

E Readers User Agents

Learn more about User-Agents

If you're looking for more information on User-Agents, be sure to read these posts on the DeviceAtlas blog:

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Some particularly useful links:

http://stackoverflow.com/questions/8778320/how-to-use-gecko-in-c-sharp
https://xinyustudio.wordpress.com/2015/07/04/embedding-web-browsers-in-winform-applications/#more-3695

See this link if you’re interested in using Gecko in a WPF project:

Installing and using the latest GeckoFX-45.0

1. Create a new WinForms application:

2. Install the GeckoFX package via NuGet

Select Tools > NuGet Package Manager > Package Manager Console

At the Package Manager Console type ‘install-package geckofx45’:

Gecko Mozilla Wiki

3. Insert the Gecko control into your form.

Select View > ToolBox and the new control should now be available:

If this tool does not appear then right click on the ‘General’ tab of the Toolbox and select ‘Choose items…’. The go to the COM Components tab and select the Browse button and locate and select the Geck winforms-related dll (‘Geckofx-Winforms.dll’) that would have been installed inside the ‘packages’ folder of your Visual Studio project. Then it should appear.
Drag, drop and resize this into your form.

4. Update the code and run it

Older versions (pre geckofx-45)

Step 1: Create a new Visual Studio project: a Windows Forms Application

Step 2: Download and extract pre-requisites

Download the pre-requisites needed to implement the Gecko web browser. You will need GeckoFX AND XULRunner.
At the time of writing, I choose:

GeckoFX-33.0

Extract the zip file and copy the dll files to the bin/ folder of your Visual Studio project as shown:

XULRunner 33.1

Extract the zip file and move/copy the entire xulrunner/ sub-folder (it is contained inside the extracted folder) to the bin/ directory as shown:

Step 3: Configure References

Add the references to your Visual Studio project. Right-click the References section and select Add Reference…

Select the Browse button and locate the 2 x dll files in your Visual Studio project bin/ folder:

Click Add and then click OK.

Step 4: Update the Toolbox

Now add the Items to your toolbox. Select View > Toolbox. Right-click underneath the General tab and select Choose Items…

Let it finish loading items, if necessary.

Select the Browse button and select the Winforms dll:

Click OK on the ‘Choose Toolbox Items’ dialog.

Your Toolbox should now have the ‘GeckoWebBrowser’ tool added:

Step 5: Update your WinForms code

Select this GeckoWebBrowser tool and use it to drag-and-drop the tool on to your WinForms control:

Right-click on the Form1 dialog and select Properties.

Use the Properties > Events tab to create the event handler for the ‘Load’ event:

Go to the Form1.cs file and update the .cs code to handle the ‘Load’ event.

Update Form1 constructor to run Initialise function, setting it with the relative path to the xulrunner sub-folder we installed earlier:

Step 6: Build, configure and run

Build your project. Notice the following build error I got on my x64 machine:

If you need to deal with this problems then update the Configuration Manager to deal with this mismatch:

Setting it as follows:

Mozilla Ftp Site Apk

So it becomes:

Firefox Setup 52.6.0esr

Now rebuild and run your application. It can sometimes take a few moments for the actual web page to materialize. Example output as shown: