I would use this document : List of Predatory Publishers 2014 by Jeffrey Beall. 

http://scholarlyoa.com/2014/01/02/list-of-predatory-publishers-2014/

Here are two helpful resources:

http://www.openaccess.manchester.ac.uk/checkjournal/predatoryjournals/

http://scholarlyoa.com/2014/01/02/list-of-predatory-publishers-2014/

I would use this document : List of Predatory Publishers 2014 by Jeffrey Beall. 

http://scholarlyoa.com/2014/01/02/list-of-predatory-publishers-2014/

I would check former publications in the same journal, and their impact

Thank you for lists. I checked and that was surprising me that I could find some journals which were not believed to be predatory journals.

Example:

Update: FTC Halts the Deceptive Practices of Academic Journal Publishers: https://www.ftc.gov/news-events/press-releases/2017/11/ftc-halts-deceptive-practices-academic-journal-publishers

• Avoid : OMICS Group Inc., iMedPub LLC, Conference Series LLC,

Visit our project with many resources available, after removal of Beall's lists.

https://www.researchgate.net/project/ETHICAL-AND-PREDATORY-PUBLISHING

Very simple. Check the journal site. If the journal is indexed by Thomson Reuters, Pubmed etc. these will be displayed there. But if only so called 'IMPACT FACTOR' with any other name before or after it are shown, that may be a predatory journal.

For confirmation, you can check the name of the journal in Thomson Reuters site or Pubmed site etc.

Please see the following link

http://conf.neicon.ru/materials/26-Domestic0417/170418-13-Gasparyan.pdf

Regards

Some indications of predatory journals:

• The journal has no address or contact information other than an email address listed.
• There are articles listed but no evidence of an editorial board to review those articles.
• The website has an overwhelming number of images from major publishers who would have no reason to partner with this journal.
• The editorial board seems to contain very prominent researchers who would be too busy to work with an unknown journal.
• There is no mention of an APF. This means you’ll likely receive an outrageous bill after your article has been rapidly accepted for publication.
• There is no mention of a peer review process or basic submission requirements.

For details see the link: https://www.enago.com/academy/how-to-identify-predatory-fake-journals/

Regards

learning alot here.Thanks all

Based on your explanation, it is clear that you are talking about open access journals. Most of the reputed open access journals are listed in the Directory of Open Access Journals https://doaj.org/ along with some performance indicators for each of them. I trust the DOAJ. You may also inspect the quality of published articles in that journal.

To complement Ljubomir's answers, there is also a web site

https://predatoryjournals.com/

which seems to build on it and expand the Beall's list

(see https://predatoryjournals.com/about/ )

See also the related question

https://www.researchgate.net/post/A_new_site_listing_predatory_journals_What_do_you_think_of_it

Our research paper may be intereting.

ETHICAL AND PREDATORY PUBLISHING: EXPERIENCES AND PERCEPTIONS OF RESEARCHERS

Article Ethical and predatory publishing: Experiences and perception...

Dear Dr.László Kótai,

To check out whether journals are peer-reviewed journals , there are the following ways:

1. Go to the journal's main page, at tab "Abstracting and Indexing", you should see "Science Citation Index", "Scopus", etc.

2. In Google, type the name of Journal + Thomson and Reuters. If journals belong to ISI, you will see that show on the search results.

Check the best publications in your field and limit yourself to publishing free of charge, if you wish! Many good suggestions posted earlier.

There is a good guide here: http://thinkchecksubmit.org/, as well as in many other similar sites inspired by the great work of J. Beall.

Regards,

CT

Most of them are Academic Spam, be careful.