If you are looking for a spelling/Grammar checker and have been possibly disappointed at the varying results, then maybe its worth giving the  LT LanguageTool a go.

The primary reason however for writing this 'wiki' is simply because the installation is more involved than the simplified 'click to install' plugin method, which many SDL AppStore users will already be acquainted with.

https://appstore.sdl.com/language/list/?search=LanguageTool 

Firstly - please observe the Technical requirements -

As this app is JAVA based, you must ensure that you have the latest version of JAVA installed (min version 8).

A quick way of testing  your machine would be to simply type CMD (Command Prompt) in Windows Search ensuring you use JAVA(space)-version (in lower case).

Once you have established (installed/updated) the correct JAVA version, please visit https://www.languagetool.org/ to download the installation files.

I have saved these for example in my Studio 'App folder' before unzipping.

You will now notice both the original .zip and the folder with the extracted content.

Once you have downloaded and unzipped the folder,  locate the following .jar file and double click-

When you see the second window (LanguageTool) appear, the application has been successful and is now working.

Now please return to the app store and download the 'click to run' App and follow the installation instructions.

Once complete, please open Studio and go to the settings- and change the Language Tool Path to where you have saved the unzipped file (this path MUST include the sub-folder where you have LanguageTool .jar file).

Now, to run a final test and ensure the App is working- First- 'Start LT Server' and then 'Test LT Server'- you should now see the following

Now there is one final setting you need to check (based on the supported languages above)-

Simply click on the Language Tool Rules tab and ensure you enter the correct Language code and you are now all set

Here is a snapshot of the LT LanguageTool in action.