I used to work with Yoast plugin for these needs but maybe something better pop up recently? Appreciate your experience and advice, guys.
all in one seo pack is also recommendable. I just use them interchangeably.
SEOpressor is good for On-Page SEO & Multiple Keyword Analysis but it is not free.You can check seopressor.com/product/features/
I am also use seo by yoast plug in and this is a 5 star plug in word press. There are no need of other plug ins because this is best and latest....