hi please go through the following link, its free of cost

http://jis.sagepub.com/

http://www.ijarcs.info/

http://www.sj-cs.org/

Hope this will be helpful:

http://www.journals.elsevier.com/information-sciences/

Best regards

Basically, all journals whose issues are not free for readers usually do not charge authors, among the most well-known editors are

www.elsevier.com/

and

ieeexplore.ieee.org/

Both have various journals about computer science (you need to be more specific if you want more focused journals than very general ones, i.e., are you looking for signal processing, artificial intelligence, networks, etc.).

Finally, you have a few fully free (for authors and readers) journals, such as JAIR (www.jair.org/) for artificial intelligence or JMLR (jmlr.csail.mit.edu/) for machine learning.

go for annals computer science journal.published by romania.

http://anale-informatica.tibiscus.ro/