Can I use other softwares than Linger to run a self-paced reading task I want to run an SPR experiment where participants will read sentences at their own pace. My problem lies in the fact of using  2 different languages English and Arabic at the same time. I tried it with Linger, but I failed to upload the files. 
Could any one of you suggest another software by which I can run SPR tasks in Arabic and English?
You can use Ibex, if you want to run it online: http://spellout.net/ibexfarm/

But in any case you should be able to upload the files in Linger, you'll need to do it centered since Linger doesn't support right-to-left languages. And you should check the encoding of the files. It should be ISO 8859-15 and not UTF-8.