Elsevier provides a tool called Journal Finder, which helps "you find journals that could be best suited for publishing your scientific article."

Using EndNote Online, you can use the Manuscript Matcher tool.  Simply login to EndNote Online by creating an account or logging in with your Facebook or LinkedIn account. Then click Match at the top of the menu.

Also, Ulrichs is another great tool to search for journals that match keywords in your article. 

JANE or Journal Author Name Estimator compares your title and abstract to other MedLine journal  http://jane.biosemantics.org/

Don't forget to consider impact factor when looking for a publisher.  Here are some great tools to assess impact factor:

Journal of Citation Reports

Google Scholar Metrics  

Scopus Comparing Journal Finder

Scimago