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Support for RTL language

We are trying to write a grammar checker for the arabic language
We would know if it is possible to base on LanguageTool ?

Thank you

Thanks for you interest. We don’t support RTL languages yet, but you’re welcome to add support. We will try to help you as much as we can. Some information about adding a language is available at

A rule’s tokens are evaulated from left to right, so we might need to change that. The first step is probably to implement your own WordTokenizer, then adding a simple rule to see how it works.

Please let me know if you need more help. If you don’t have Java knowledge that’s okay too, just let us know and we’ll help you with the first steps.

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بالطبع تستطيع…عملت على هذا السنة الماضية …استطعت إضافة اللغة العربية إلى المدقق ، كان ينقصني قاموس بحجم اكبر ليتضح العمل أكثر…لم استطع إنجازه أو العمل عليه نظرا لضيق الوقت …ساعدني السيد دانييل كثيرا فيما يخص الاخطاء المتعلقة بجافا و البرمجة …بإمكانك مراسلتي عبر البريد حتى أساعدك بقدر استطاعتي

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where have you reached so far in this? was it accepted in upstream?

CC: @linuxscout

Salam, Arabic is supported since release 4.9.