How to find advertizers by a keyword?

[Golan]

I have a nice EMD and i want to prospect it to everyone paying for ads for this keyword. Ads everywhere - G, Bing, FB, Linkedin. What tools can i use? I know there are some but i have never used them so can't recall what they are. Know only Semrush. Anything else?
Many thanks.

 

[real]

Single keyword - consider doing it manually using your browser? :-)

KeywordSpy http://www.keywordspy.com/

 

[bat-man]

I agree with @real ... manual search in any search engine will work and it's free. You can use a scraper to retrieve the data it might save you some time.

I used keywordspy and semrusch they are excellent. Alexa.com used to have some data.
Check those:
spyfu.com
whatrunswhere.com
adbeat.com
adgooroo.com